Dental biofilm of symptomatic COVID-19 patients harbours SARS-CoV-2.

AIMS: SARS-CoV-2 RNA has been recovered from different sites in the human body, including the mouth. The present study aimed to investigate the presence of SARS-CoV-2 RNA in the dental biofilm of symptomatic patients who tested positive in nasopharyngeal and oropharyngeal (NASO/ORO) samples. MATERIALS & METHODS: An observational clinical study of individuals with flu-like symptoms was conducted between July and September 2020. Dental biofilm (BIO) samples were collected and analysed using real-time quantitative polymerase chain reaction (RT-qPCR) to determine the virus's presence. RESULTS: Seventy participants (40 ± 9.8 years of age, 71.4% female) tested positive for SARS-CoV-2 RNA in NASO/ORO samples and were included in the study. Among them, 13 tested positive in BIO samples (18.6%; 95% CI: [9.5, 27.7]). The median and interquartile range of cycle quantification (Cq) for NASO/ORO and BIO samples were 15.9 [6.9] and 35.9 [4.0] (p = .001), respectively. BIO-positive participants showed a higher virus load in NASO/ORO samples (p = .012) than those testing negative (Cq = 20.4 [6.1]). CONCLUSIONS: Dental biofilms from symptomatic COVID-19 patients harbour SARS-CoV-2 RNA and might be a potential reservoir with an essential role in COVID-19 transmission.

Pedagogical training profile of basic health sciences faculty in biomedical and related fields at Brazilian public and private higher education institutions.

Historically, Brazilian higher education teachers' pedagogical training has not been a concern. Even today, a graduate degree is the main requirement to be a faculty member. However, a set of competencies is necessary to teach: pedagogical competency, political competency, and knowledge of specific content. Most graduate training covers only knowledge of specific content. Therefore, this work aimed to outline the profile of basic health sciences faculty members teaching in biomedical and related fields regarding their undergraduate and graduate training, as well as the initial and continued pedagogical training in Brazilian public and private higher education institutions (HEIs). An electronic questionnaire was sent to these professionals, and a total of 763 responses were analyzed (66.4% from public and 33.6% from private HEIs). Compared with private HEI faculty, faculty from public HEIs were more experienced in teaching, and more time had passed since they finished their graduate training. On the other hand, faculty from private HEIs had a more intense undergraduate teaching workload than faculty from public HEIs. Additionally, faculty from private HEIs attended more extensive and more frequent pedagogical training activities (PTAs). Both groups expressed that activities closely related to their classroom practice and recognition for good pedagogical performance were incentives for their participation in PTAs. In conclusion, differences between the faculty from public and private HEIs may be due to the characteristics of HEIs themselves. Hypothetically, private HEIs focus on teaching, which may explain why faculty from these institutions seek improvement in this area, whereas public HEIs focus on research.

Performance of the Gail and Tyrer-Cuzick breast cancer risk assessment models in women screened in a primary care setting with the FHS-7 questionnaire.

Breast cancer (BC) risk assessment models base their estimations on different aspects of a woman's personal and familial history. The Gail and Tyrer-Cuzick models are the most commonly used, and BC risks assigned by them vary considerably especially concerning familial history. In this study, our aim was to compare the Gail and Tyrer-Cuzick models after initial screening for familial history of cancer in primary care using the FHS-7 questionnaire. We compared 846 unrelated women with at least one positive answer to any of the seven FHS-7 questions (positive group) and 892 unrelated women that answered negatively (negative group). Concordance between BC risk estimates was compared by Bland-Altman graphics. Mean BC risk estimates were higher using the Tyrer-Cuzick Model in women from the positive group, while women from the negative group had higher BC risk estimates using the Gail model. With increasing estimates, discordance also increased, mainly in the FHS-7 positive group. Our results show that in women with a familial history of cancer, the Gail model underestimates risk and the Tyrer-Cuzick seems to be more appropriate. FHS-7 can be a useful tool for the identification of women with higher breast cancer risks in the primary care setting.

Investigation of anti-Leptospira spp. antibodies and leptospiruria in cats attended to a veterinary teaching hospital in southern Brazil.

Leptospirosis is a bacterial zoonosis that affects both humans and animals worldwide. Currently, it is known that cats may be susceptible to infection. This study aims to investigate the presence of anti-Leptospira spp. antibodies and leptospiruria in cats, using Microscopic Agglutination Test (MAT) and Real-time Polymerase Chain Reaction (PCR) techniques, respectively. A total of 76 cats, undergoing comprehensive anamnesis, general physical examination, and complementary exams were included in the investigation. Among the 76 cats tested, 9.2% (7/76) exhibited the presence of anti-Leptospira spp. antibodies, while Leptospira spp. DNA was detected in at 1.3% (1/76) of the evaluated urine samples. No significant associations were observed between the serological and molecular diagnostic results and the assessed variables, including clinical data and laboratory results of cats testing positive. This study provides insight into the occurrence of Leptospira spp. infection and leptospiruria in cats treated at a veterinary teaching hospital in southern Brazil.

Impact of dentists and equipment in the performing dental imaging examinations: a longitudinal analysis.

In this study, we aimed to identify factors associated with performing dental imaging examinations in public health services. Brazilian data at the municipal level (n = 5,564) in two time periods, P0 (2005-2007) and P1 (2014-2016), were collated from health information systems. The increase in the municipal rates of intraoral and extraoral radiographic imaging procedures was the outcome. Changes in the use of clinical procedures and the rates of dentists and equipment were the main predictors. Multiple logistic regression analysis was performed to estimate the adjusted odds ratio (OR). Approximately 35.3% of the Brazilian municipalities increased the dental radiography equipment rate, 9.9% increased the fan-beam computed tomography (CT) equipment rate, and 5.9% increased the magnetic resonance imaging (MRI) equipment rate. In addition, 31.8% increased the periapical/interproximal radiography rate, 10.5% increased the CT rate, and 4.4% increased the MRI rate. Increases in the dental radiography, CT, and MRI rates were associated with higher chances of periapical/interproximal images (OR = 1.90, p < 0.01), face and neck images (OR =1 5.3, p < 0.01), and MR images (OR = 18.1, p < 0.01), respectively. Municipalities that increased the rates of endodontists increased the rates of periapical/interproximal (OR = 2.50, p < 0.01) and occlusal (OR = 1.60, p < 0.01) imaging procedures, and those that increased the rates of radiologists also increased the rates of occlusal (OR = 2.00, p < 0.01) and panoramic (OR = 1.70, p < 0.01) imaging procedures. The implementation of a secondary dental care center, Centro de Especialidades Odontológicas (CEO) was associated with an increase in the chances of performing periapical/interproximal and panoramic radiographic procedures in 1.5 and occlusal radiographic examinations in 2.0. The rates of dentists, equipment, specialized dental centers, and specific dental procedures were associated with the increased use of imaging procedures in dentistry in the Brazilian public health system.

[Congenital anomalies from the perspective of social determinants of health]. / Anomalias congênitas na perspectiva dos determinantes sociais da saúde.

The objective of this study was to analyze factors associated with cases of congenital anomalies from the perspective of social determinants of health in the State of Rio Grande do Sul, Brazil. This is a case-control study with all the pairs of mothers and liveborn infants from 2012 to 2015 in the state, based on the total number of liveborn infants with congenital anomalies (5,250) and a random sample of 21,000 without congenital anomalies, according to data on the live birth certificates. The statistical analyses included chi-square tests and logistic regression models with SPSS. The Dahlgren & Whitehead model was used as the basis for grouping and discussing the variables. In the multivariate model, all the variables that were significantly associated with the outcome were in the sense of increasing the odds of births with congenital anomalies: black women had 20% higher odds than white women (OR = 1.20; p-value = 0.013); age over 40 years increased the odds by 97% when compared to women 18 to 29 years of age; women with less than four years of schooling showed 50% higher odds when compared to women with 12 or more years of schooling (OR = 1.50; p-value = 0.001); women with no prenatal visits had 97% higher odds than women with seven or more prenatal visits (OR = 1.97; p-value = 0.001); and prior history of miscarriages/stillbirths increased the odds by 17% (OR = 1.17; p-value = 0.001). The results raise the issue of racial and social inequalities, related to health inequities.

O objetivo deste estudo foi analisar os fatores associados aos casos de anomalias congênitas na perspectiva dos determinantes sociais da saúde no Estado do Rio Grande do Sul, Brasil. Trata-se de um estudo do tipo caso-controle, com todas as duplas de mães e nascidos vivos no período de 2012 a 2015 no estado, sendo considerado o total de nascidos vivos com anomalia congênita (5.250), e realizada amostragem aleatória de 21 mil sem anomalia congênita, conforme as informações das Declarações de Nascidos Vivos. Para análise estatística, foram realizados testes qui-quadrado e modelos de regressão logística com o SPSS. O modelo de Dahlgren & Whitehead foi utilizado como base para agrupamento e discussão das variáveis. No modelo multivariado, todas variáveis que se mostraram associadas significativamente com o desfecho foram no sentido de aumentar a chance de nascimentos com anomalia congênita: as mulheres pretas tiveram 20% mais chance, comparadas às brancas (OR = 1,20; valor de p = 0,013); ter mais de 40 anos aumentou em 97% a chance, quando comparadas às de 18 a 29 anos; as mulheres com menos de quatro anos de estudo apresentaram 50% mais chance, comparadas às mulheres com 12 anos ou mais de estudo (OR = 1,50; valor de p = 0,001); as mulheres que não realizaram nenhuma consulta de pré-natal tiveram 97% mais chance, comparadas às mulheres que realizaram sete ou mais consultas (OR = 1,97; valor de p = 0,001); e a ocorrência de abortos/perdas fetais aumentou em 17% a chance, em relação a nunca ter tido abortos/perdas fetais prévios (OR = 1,17; valor de p = 0,001). Os resultados trazem à discussão as desigualdades raciais e sociais, relacionando-as às iniquidades em saúde.

El objetivo de este estudio fue analizar los factores asociados con los casos de anomalías congénitas desde la perspectiva de los determinantes sociales en salud del estado de Rio Grande do Sul, Brasil. Se trata de un estudio de tipo caso-control, con todas las parejas de madres y nacidos vivos en el período de 2012 a 2015 en el estado, considerando el total de nacidos vivos con anomalía congénita (5.250), y realizando una muestra aleatoria con 21.000 sin anomalía congénita, conforme la información de las Declaraciones de Nacidos Vivos. Para el análisis estadístico, se realizaron tests chi-cuadrado y modelos de regresión logística mediante el SPSS. El modelo de Dahlgren & Whitehead se utilizó como base para el agrupamiento y discusión de las variables. En el modelo multivariado, todas las variables que se mostraron asociadas significativamente con el resultado fueron en el sentido de aumentar la oportunidad de nacimientos con anomalía congénita: las mujeres negras tuvieron un 20% más de oportunidad, comparadas con las blancas (OR = 1,20; valor de p = 0,013); tener más de 40 años aumentó en un 97% la oportunidad, cuando se comparan con las de 18 a 29 años; las mujeres con menos de cuatro años de estudio presentaron un 50% más de oportunidades, comparadas con las mujeres con 12 años o más de estudio (OR = 1,50; valor de p = 0,001); las mujeres que no realizaron ninguna consulta prenatal tuvieron 97% más oportunidades, comparadas con las mujeres que realizaron siete o más consultas (OR = 1,97; valor de p = 0,001); y la ocurrencia de abortos/pérdidas fetales aumentó en un 17% la oportunidad, en relación a nunca haber sufrido abortos/pérdidas fetales previas (OR = 1,17; valor de p = 0,001). Los resultados plantean la discusión de las desigualdades raciales y sociales, relacionándolas con las inequidades en salud.

[Analysis of records for women that have undergone legally authorized abortions in Porto Alegre, Rio Grande do Sul State, Brazil]. / Análise dos registros de atendimentos de mulheres que realizaram aborto previsto em lei em Porto Alegre, Rio Grande do Sul, Brasil.

Abortion as allowed by law in Brazil is a right that is rarely enforced, due to the multiple barriers to access. Another troublesome issue related to the health system's organization is the difficulty in obtaining reliable and easily accessible records to back monitoring and evaluation of legally authorized abortion. The current study thus aimed to analyze the patient records of women that had undergone legal abortion in the city of Porto Alegre, Rio Grande do Sul State, from 2013 to 2018 and to identify the procedure's prevalence in the Hospital Information System (SIH). The study analyzed on site the patient files for legally permitted abortions performed in the four referral services in the city. The authors cross-analyzed the data with the database of the SIH under the Brazilian Unified National Health System (SUS). Prevalence ratio was estimated with a Poisson regression model with robust variance. Examination of the patient files identified 236 cases of legal abortion, of which 95 (40.3%) were recorded in the SIH. The cases in which the patient files contained ICD O04 (medical abortion) identified in their internal records had 3.02 times higher prevalence (95%CI: 1.83-4.98) of being recorded in the SIH than those without the ICD code. The number of records of legal abortions in the SIH differed according to the hospital. However, independently of the hospital, the fact that the internal record listed ICD O04 increased the prevalence of records in the SIH. In conclusion, the lack of standardization and under-recording hindered the collection of trustworthy information in the national database of the SUS, further increasing the invisibility of legal abortion in Brazil.

O aborto permitido por lei no Brasil é um direito pouco garantido devido a múltiplas barreiras de acesso. A dificuldade em obter-se registros confiáveis e de fácil acesso, que subsidiem ações de monitoramento e avaliação pertinentes a essa temática, é outra questão preocupante relacionada à organização do sistema de saúde. Assim, esta pesquisa teve como objetivo analisar os registros de atendimentos a mulheres que realizaram aborto legal no Município de Porto Alegre, Rio Grande do Sul, no período de 2013 a 2018 e identificar sua prevalência no Sistema de Informações Hospitalares (SIH). Para isso, os prontuários dos casos de aborto previstos em lei, realizados nos quatro serviços de referência foram avaliados in loco. Os dados obtidos foram cruzados com o banco do SIH do Sistema Único de Saúde (SUS). A razão de prevalência foi estimada por meio do modelo de regressão Poisson, com variância robusta. Foram identificados, nos prontuários, 236 casos de aborto legal, dos quais 95 (40,3%) estavam registrados no SIH. Os casos cujos prontuários tinham o CID O04 (aborto por razões médicas) identificado em seus registros internos tiveram uma prevalência de 3,02 (IC95%: 1,83-4,98) vezes de constarem no SIH do que aqueles que não identificaram. Foi observado que o número de registros de aborto legal no SIH diferia dependendo do hospital; no entanto, verificou-se que, independentemente do hospital, o fato do registro interno descrever o CID O04 aumenta a prevalência de registros no SIH. Conclui-se que a falta de padronização e o sub-registro dificultam a obtenção de informações fidedignas na base de dados nacionais do SUS, aumentando a invisibilidade do aborto legal.

El aborto está permitido por ley en Brasil, aunque es un derecho poco garantizado, debido a múltiples barreras de acceso. La dificultad de conseguir registros confiables y de fácil acceso, que apoyen acciones de supervisión y evaluación pertinentes para esta temática, es otra cuestión preocupante relacionada con la organización del sistema de salud. De este modo, el objetivo de esta investigación fue analizar los registros de atención a mujeres, que abortaron legalmente en el Municipio de Porto Alegre, Rio Grande do Sul, durante el período de 2013 a 2018 e identificar su prevalencia en el Sistema de Informaciones Hospitalarias (SIH). Para tal fin, se evaluaron in loco los historiales de los casos de aborto previstos en ley, efectuados en cuatro servicios de referencia. Los datos obtenidos se cruzaron con el banco de datos del SIH del Sistema Único de Salud (SUS). La razón de prevalencia se estimó mediante el modelo de regresión Poisson con variancia robusta. Se identificaron en los registros médicos, 236 casos de aborto legal, de los cuales 95 (40,3%) estaban registrados en el SIH. Los casos cuyos historiales tenían el CIE O04 (aborto por razones médicas), identificado en sus registros internos, contaron con una prevalencia de 3,02 veces (IC95%: 1,83-4,98) respecto a constar en el SIH, en relación con aquellos que no se identificaron. Se observó que el número de registros de aborto legal en el SIH difería dependiendo del hospital; no obstante, se verificó que, independientemente del hospital, el hecho de que el registro interno describa el CIE O04 aumenta la prevalencia de registros en el SIH. Se concluye que la falta de estandarización y el subregistro dificultan la obtención de información fidedigna en la base de datos nacionales del SUS, aumentando la invisibilidad del aborto legal.

Factors associated with a positive childbirth experience in Brazilian women: A cross-sectional study.

BACKGROUND: Having a positive childbirth experience is an increasingly valued outcome. Few studies evaluated the women's satisfaction with childbirth through face-to-face interviews out of the health service environment. The objective of this study was to identify factors associated with a higher level of satisfaction with the childbirth experience among Brazilian women. METHODS: This cross-sectional study involved 287 women giving birth in two hospitals in southern Brazil. Women who gave birth to healthy newborns at term were randomly selected. Face-to-face interviews were conducted 31-37 days after delivery, at the mothers' homes, using a structured questionnaire. Satisfaction with the childbirth experience was measured using a Likert-type scale ranging from very satisfied to very dissatisfied. Prevalence ratios (PR) were estimated using Poisson regression with robust variance. RESULTS: Following hierarchical multivariate analysis, the following factors remained associated with a higher level of satisfaction with the childbirth experience: being satisfied with antenatal care (PR=1.30; 95% confidence interval [95%CI]=1.06-1.59), understanding the information provided by health professionals during labor and delivery (PR=1.40; 95%CI=1.01-1.95), not having reported disrespect and abuse (PR=1.53; 95%CI=1.01-2.31), and having had the baby put to the breast within the first hour of life (PR=1.63; 95%CI=1.26-2.11). No association was observed with type of delivery or hospital status (public or private). CONCLUSIONS: A higher level of satisfaction with the childbirth experience is related to satisfactory antenatal care, a non-abusive, respectful, and informative environment during childbirth, and to the opportunity to breastfeed the baby within the first hour of life. In clinical practice, greater attention to these basic principles of care during pregnancy and delivery could provide more positive experiences during birth.

[Self-reported prevalence of hypertension and associated factors in quilombola communities in the State of Rio Grande do Sul, Brazil]. / Prevalência autorreferida de hipertensão e fatores associados em comunidades quilombolas do Rio Grande do Sul, Brasil.

The study sought to identify the prevalence of arterial hypertension (AH) and possible associated factors in adults residing in quilombola communities in the State of Rio Grande do Sul (RS). A transversal population-based study, carried out in 2011, included 589 adult households in quilombola communities in the State of RS, by sampling proportional to the size. The outcome was obtained by the question: "Has a doctor ever told you that you have hypertension?" Poisson regression with robust variance and hierarchical input variables were used. Finally, the population attributable fractions per component (PAFC) were calculated for modifiable factors associated to AH. The self-reported prevalence of AH was 38.3% (CI95% 31.4%-45.1%). Adjusted analysis revealed an association of the outcome with age group, education, excessive alcohol consumption, waist circumference and the presence of diabetes. PAFC analysis revealed that if the individuals had greater schooling, the prevalence of AH would be reduced. Given the high prevalence of AH and the extreme social vulnerability of this population, public policies that guarantee their access to fundamental rights (health, income and schooling) could have a significant impact in reducing this outcome.

Este estudo teve como objetivo identificar a prevalência e fatores associados à hipertensão arterial (HA) em adultos quilombolas do Rio Grande do Sul (RS). Trata-se de um estudo transversal de base populacional, realizado em 2011, com 589 adultos responsáveis por domicílios e amostragem proporcional ao tamanho. O desfecho foi obtido com a pergunta: "Algum médico já lhe disse que você tem hipertensão?". Foi empregada regressão de Poisson, com variância robusta e entrada hierarquizada das variáveis. Por fim, foram calculadas as frações atribuíveis populacionais por componente (FAPC) para fatores modificáveis associados à HA. A prevalência autorreferida de HA foi de 38,3% (IC95% 31,4%-45,1%). A análise ajustada revelou associação do desfecho com faixa etária, escolaridade, consumo excessivo de álcool, circunferência da cintura acima do adequado e presença de diabetes. A análise dos FAPC revelou que, se os indivíduos tivessem maior escolaridade, a prevalência de HA seria reduzida. Diante da elevada prevalência de HA e da extrema vulnerabilidade social dessa população, políticas públicas que garantam seu acesso a direitos fundamentais (saúde, renda e escolaridade) poderiam ter impacto importante na diminuição desse desfecho.

Race attitudes in cultural context: The view from two Brazilian states.

The development of implicit and explicit racial attitudes were investigated in 542 White, Pardo, and Black Brazilian children and adolescents (aged 6 to 14) from 2 different regional contexts that vary dramatically in their racial diversity, Bahia (BA) and Rio Grande do Sul (RS). Results revealed the pervasive presence of race biases favoring higher status groups across multiple measures of implicit and explicit attitude. Contextual differences were also apparent, particularly in measures of group identification: Children from the more diverse context (BA), including Black children, identified themselves more strongly with lighter skin tones, particularly with Whites. Implicit attitudes were stable with age, whereas explicit attitudes generally showed less bias as a function of age. Implicit and explicit racial preference were related in younger but not older children, providing evidence of increasing divergence across early development. Differences between our findings and those reported from other regions underscores the need for greater diversity in our research efforts. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

Practice of exclusive breastfeeding and its associated factors in a suburban area in Angola: a cross-sectional study.

BACKGROUND: Exclusive breastfeeding for six months is one of the measures with highest impact on prevention of child deaths. The determinants of breastfeeding practices are complex and differ between populations. This study aimed to identify factors associated with the prevalence of exclusive breastfeeding in a suburban area in Angola. DESIGN AND SETTING: Population-based cross-sectional study in the municipality of Cacuaco, Luanda. METHODS: A random sample of children under two years of age and their mothers was included. -Prevalence ratios (PR) were estimated using Poisson regression based on a hierarchical model. RESULTS: 749 children and their mothers were surveyed, including 274 children under six months. Theprevalence of exclusive breastfeeding among children under six months was 51.5% (95% confidence interval, CI, 46.3-56.6%). Four variables were positively associated with exclusive breastfeeding at ages of under six months: number of prenatal visits (PR 1.11 for each visit after the first one; 95% CI 1.04-1.18), maternal occupation (other occupations versus self-employed) (PR 1.54; 95% CI 1.05-2.26), younger child age (PR 0.77 for each month; 95% CI 0.71-0.84) and female child (PR 1.34; 95% CI 1.02-1.76). CONCLUSIONS: Our findings showed that the prevalence of exclusive breastfeeding at six months was satisfactory, according to international recommendations. Factors associated with exclusive breastfeeding practices that had never been surveyed before in Angola were identified through this study. These data are particularly relevant in the context of high infant mortality and may be useful in planning actions aimed at improving child health through promotion of exclusive breastfeeding, in Angola and other countries.

[Increase in breast cancer mortality in Southern Brazil from 1980 to 2002]. / Câncer de mama: mortalidade crescente na Região Sul do Brasil entre 1980 e 2002.

Breast cancer is the most prevalent form of cancer in the world. Breast cancer mortality rates are high in Brazil and show striking variations between geographic regions. A time-trend ecological study was performed in Southern Brazil from 1980 to 2002. Data were collected from the Mortality Information System (Ministry of Health) to assess age-standardized mortality rates. Linear regression for mortality time-trend analysis and multiple regression for mortality differences among three States were calculated. The highest mean mortality rate (14.45) was observed in Rio Grande do Sul, significantly greater (p < 0.001) than in Santa Catarina (8.93) and Paraná (9.95). An annual increase of 0.47 in the mortality rate was observed in the three States of Southern Brazil. According to these results, the South of Brazil and especially the State of Rio Grande do Sul showed a significant upward trend in breast cancer mortality. Continued efforts are needed to help explain these numbers and reverse the present situation.

Odds Ratio or Prevalence Ratio? An Overview of Reported Statistical Methods and Appropriateness of Interpretations in Cross-sectional Studies with Dichotomous Outcomes in Veterinary Medicine.

One of the most commonly observational study designs employed in veterinary is the cross-sectional study with binary outcomes. To measure an association with exposure, the use of prevalence ratios (PR) or odds ratios (OR) are possible. In human epidemiology, much has been discussed about the use of the OR exclusively for case-control studies and some authors reported that there is no good justification for fitting logistic regression when the prevalence of the disease is high, in which OR overestimate the PR. Nonetheless, interpretation of OR is difficult since confusing between risk and odds can lead to incorrect quantitative interpretation of data such as "the risk is X times greater," commonly reported in studies that use OR. The aims of this study were (1) to review articles with cross-sectional designs to assess the statistical method used and the appropriateness of the interpretation of the estimated measure of association and (2) to illustrate the use of alternative statistical methods that estimate PR directly. An overview of statistical methods and its interpretation using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines was conducted and included a diverse set of peer-reviewed journals among the veterinary science field using PubMed as the search engine. From each article, the statistical method used and the appropriateness of the interpretation of the estimated measure of association were registered. Additionally, four alternative models for logistic regression that estimate directly PR were tested using our own dataset from a cross-sectional study on bovine viral diarrhea virus. The initial search strategy found 62 articles, in which 6 articles were excluded and therefore 56 studies were used for the overall analysis. The review showed that independent of the level of prevalence reported, 96% of articles employed logistic regression, thus estimating the OR. Results of the multivariate models indicated that logistic regression was the method that most overestimated the PR. The findings of this study indicate that although there are methods that directly estimate PR, many studies in veterinary science do not use these methods and misinterpret the OR estimated by the logistic regression.

Impact of dentists and equipment in the performing dental imaging examinations: a longitudinal analysis

Abstract: In this study, we aimed to identify factors associated with performing dental imaging examinations in public health services. Brazilian data at the municipal level (n = 5,564) in two time periods, P0 (2005-2007) and P1 (2014-2016), were collated from health information systems. The increase in the municipal rates of intraoral and extraoral radiographic imaging procedures was the outcome. Changes in the use of clinical procedures and the rates of dentists and equipment were the main predictors. Multiple logistic regression analysis was performed to estimate the adjusted odds ratio (OR). Approximately 35.3% of the Brazilian municipalities increased the dental radiography equipment rate, 9.9% increased the fan-beam computed tomography (CT) equipment rate, and 5.9% increased the magnetic resonance imaging (MRI) equipment rate. In addition, 31.8% increased the periapical/interproximal radiography rate, 10.5% increased the CT rate, and 4.4% increased the MRI rate. Increases in the dental radiography, CT, and MRI rates were associated with higher chances of periapical/interproximal images (OR = 1.90, p < 0.01), face and neck images (OR =1 5.3, p < 0.01), and MR images (OR = 18.1, p < 0.01), respectively. Municipalities that increased the rates of endodontists increased the rates of periapical/interproximal (OR = 2.50, p < 0.01) and occlusal (OR = 1.60, p < 0.01) imaging procedures, and those that increased the rates of radiologists also increased the rates of occlusal (OR = 2.00, p < 0.01) and panoramic (OR = 1.70, p < 0.01) imaging procedures. The implementation of a secondary dental care center, Centro de Especialidades Odontológicas (CEO) was associated with an increase in the chances of performing periapical/interproximal and panoramic radiographic procedures in 1.5 and occlusal radiographic examinations in 2.0. The rates of dentists, equipment, specialized dental centers, and specific dental procedures were associated with the increased use of imaging procedures in dentistry in the Brazilian public health system.

Anomalias congênitas na perspectiva dos determinantes sociais da saúde / Congenital anomalies from the perspective of social determinants of health / Anomalías congénitas desde la perspectiva de los determinantes sociales en salud

Resumo: O objetivo deste estudo foi analisar os fatores associados aos casos de anomalias congênitas na perspectiva dos determinantes sociais da saúde no Estado do Rio Grande do Sul, Brasil. Trata-se de um estudo do tipo caso-controle, com todas as duplas de mães e nascidos vivos no período de 2012 a 2015 no estado, sendo considerado o total de nascidos vivos com anomalia congênita (5.250), e realizada amostragem aleatória de 21 mil sem anomalia congênita, conforme as informações das Declarações de Nascidos Vivos. Para análise estatística, foram realizados testes qui-quadrado e modelos de regressão logística com o SPSS. O modelo de Dahlgren & Whitehead foi utilizado como base para agrupamento e discussão das variáveis. No modelo multivariado, todas variáveis que se mostraram associadas significativamente com o desfecho foram no sentido de aumentar a chance de nascimentos com anomalia congênita: as mulheres pretas tiveram 20% mais chance, comparadas às brancas (OR = 1,20; valor de p = 0,013); ter mais de 40 anos aumentou em 97% a chance, quando comparadas às de 18 a 29 anos; as mulheres com menos de quatro anos de estudo apresentaram 50% mais chance, comparadas às mulheres com 12 anos ou mais de estudo (OR = 1,50; valor de p = 0,001); as mulheres que não realizaram nenhuma consulta de pré-natal tiveram 97% mais chance, comparadas às mulheres que realizaram sete ou mais consultas (OR = 1,97; valor de p = 0,001); e a ocorrência de abortos/perdas fetais aumentou em 17% a chance, em relação a nunca ter tido abortos/perdas fetais prévios (OR = 1,17; valor de p = 0,001). Os resultados trazem à discussão as desigualdades raciais e sociais, relacionando-as às iniquidades em saúde.

Abstract: The objective of this study was to analyze factors associated with cases of congenital anomalies from the perspective of social determinants of health in the State of Rio Grande do Sul, Brazil. This is a case-control study with all the pairs of mothers and liveborn infants from 2012 to 2015 in the state, based on the total number of liveborn infants with congenital anomalies (5,250) and a random sample of 21,000 without congenital anomalies, according to data on the live birth certificates. The statistical analyses included chi-square tests and logistic regression models with SPSS. The Dahlgren & Whitehead model was used as the basis for grouping and discussing the variables. In the multivariate model, all the variables that were significantly associated with the outcome were in the sense of increasing the odds of births with congenital anomalies: black women had 20% higher odds than white women (OR = 1.20; p-value = 0.013); age over 40 years increased the odds by 97% when compared to women 18 to 29 years of age; women with less than four years of schooling showed 50% higher odds when compared to women with 12 or more years of schooling (OR = 1.50; p-value = 0.001); women with no prenatal visits had 97% higher odds than women with seven or more prenatal visits (OR = 1.97; p-value = 0.001); and prior history of miscarriages/stillbirths increased the odds by 17% (OR = 1.17; p-value = 0.001). The results raise the issue of racial and social inequalities, related to health inequities.

Resumen: El objetivo de este estudio fue analizar los factores asociados con los casos de anomalías congénitas desde la perspectiva de los determinantes sociales en salud del estado de Rio Grande do Sul, Brasil. Se trata de un estudio de tipo caso-control, con todas las parejas de madres y nacidos vivos en el período de 2012 a 2015 en el estado, considerando el total de nacidos vivos con anomalía congénita (5.250), y realizando una muestra aleatoria con 21.000 sin anomalía congénita, conforme la información de las Declaraciones de Nacidos Vivos. Para el análisis estadístico, se realizaron tests chi-cuadrado y modelos de regresión logística mediante el SPSS. El modelo de Dahlgren & Whitehead se utilizó como base para el agrupamiento y discusión de las variables. En el modelo multivariado, todas las variables que se mostraron asociadas significativamente con el resultado fueron en el sentido de aumentar la oportunidad de nacimientos con anomalía congénita: las mujeres negras tuvieron un 20% más de oportunidad, comparadas con las blancas (OR = 1,20; valor de p = 0,013); tener más de 40 años aumentó en un 97% la oportunidad, cuando se comparan con las de 18 a 29 años; las mujeres con menos de cuatro años de estudio presentaron un 50% más de oportunidades, comparadas con las mujeres con 12 años o más de estudio (OR = 1,50; valor de p = 0,001); las mujeres que no realizaron ninguna consulta prenatal tuvieron 97% más oportunidades, comparadas con las mujeres que realizaron siete o más consultas (OR = 1,97; valor de p = 0,001); y la ocurrencia de abortos/pérdidas fetales aumentó en un 17% la oportunidad, en relación a nunca haber sufrido abortos/pérdidas fetales previas (OR = 1,17; valor de p = 0,001). Los resultados plantean la discusión de las desigualdades raciales y sociales, relacionándolas con las inequidades en salud.

Análise dos registros de atendimentos de mulheres que realizaram aborto previsto em lei em Porto Alegre, Rio Grande do Sul, Brasil / Analysis of records for women that have undergone legally authorized abortions in Porto Alegre, Rio Grande do Sul State, Brazil / Análisis de los registros de atención a mujeres que abortaron según lo previsto en la ley en Porto Alegre, Río Grande do Sul, Brasil

Resumo: O aborto permitido por lei no Brasil é um direito pouco garantido devido a múltiplas barreiras de acesso. A dificuldade em obter-se registros confiáveis e de fácil acesso, que subsidiem ações de monitoramento e avaliação pertinentes a essa temática, é outra questão preocupante relacionada à organização do sistema de saúde. Assim, esta pesquisa teve como objetivo analisar os registros de atendimentos a mulheres que realizaram aborto legal no Município de Porto Alegre, Rio Grande do Sul, no período de 2013 a 2018 e identificar sua prevalência no Sistema de Informações Hospitalares (SIH). Para isso, os prontuários dos casos de aborto previstos em lei, realizados nos quatro serviços de referência foram avaliados in loco. Os dados obtidos foram cruzados com o banco do SIH do Sistema Único de Saúde (SUS). A razão de prevalência foi estimada por meio do modelo de regressão Poisson, com variância robusta. Foram identificados, nos prontuários, 236 casos de aborto legal, dos quais 95 (40,3%) estavam registrados no SIH. Os casos cujos prontuários tinham o CID O04 (aborto por razões médicas) identificado em seus registros internos tiveram uma prevalência de 3,02 (IC95%: 1,83-4,98) vezes de constarem no SIH do que aqueles que não identificaram. Foi observado que o número de registros de aborto legal no SIH diferia dependendo do hospital; no entanto, verificou-se que, independentemente do hospital, o fato do registro interno descrever o CID O04 aumenta a prevalência de registros no SIH. Conclui-se que a falta de padronização e o sub-registro dificultam a obtenção de informações fidedignas na base de dados nacionais do SUS, aumentando a invisibilidade do aborto legal.

Abstract: Abortion as allowed by law in Brazil is a right that is rarely enforced, due to the multiple barriers to access. Another troublesome issue related to the health system's organization is the difficulty in obtaining reliable and easily accessible records to back monitoring and evaluation of legally authorized abortion. The current study thus aimed to analyze the patient records of women that had undergone legal abortion in the city of Porto Alegre, Rio Grande do Sul State, from 2013 to 2018 and to identify the procedure's prevalence in the Hospital Information System (SIH). The study analyzed on site the patient files for legally permitted abortions performed in the four referral services in the city. The authors cross-analyzed the data with the database of the SIH under the Brazilian Unified National Health System (SUS). Prevalence ratio was estimated with a Poisson regression model with robust variance. Examination of the patient files identified 236 cases of legal abortion, of which 95 (40.3%) were recorded in the SIH. The cases in which the patient files contained ICD O04 (medical abortion) identified in their internal records had 3.02 times higher prevalence (95%CI: 1.83-4.98) of being recorded in the SIH than those without the ICD code. The number of records of legal abortions in the SIH differed according to the hospital. However, independently of the hospital, the fact that the internal record listed ICD O04 increased the prevalence of records in the SIH. In conclusion, the lack of standardization and under-recording hindered the collection of trustworthy information in the national database of the SUS, further increasing the invisibility of legal abortion in Brazil.

Resumen: El aborto está permitido por ley en Brasil, aunque es un derecho poco garantizado, debido a múltiples barreras de acceso. La dificultad de conseguir registros confiables y de fácil acceso, que apoyen acciones de supervisión y evaluación pertinentes para esta temática, es otra cuestión preocupante relacionada con la organización del sistema de salud. De este modo, el objetivo de esta investigación fue analizar los registros de atención a mujeres, que abortaron legalmente en el Municipio de Porto Alegre, Rio Grande do Sul, durante el período de 2013 a 2018 e identificar su prevalencia en el Sistema de Informaciones Hospitalarias (SIH). Para tal fin, se evaluaron in loco los historiales de los casos de aborto previstos en ley, efectuados en cuatro servicios de referencia. Los datos obtenidos se cruzaron con el banco de datos del SIH del Sistema Único de Salud (SUS). La razón de prevalencia se estimó mediante el modelo de regresión Poisson con variancia robusta. Se identificaron en los registros médicos, 236 casos de aborto legal, de los cuales 95 (40,3%) estaban registrados en el SIH. Los casos cuyos historiales tenían el CIE O04 (aborto por razones médicas), identificado en sus registros internos, contaron con una prevalencia de 3,02 veces (IC95%: 1,83-4,98) respecto a constar en el SIH, en relación con aquellos que no se identificaron. Se observó que el número de registros de aborto legal en el SIH difería dependiendo del hospital; no obstante, se verificó que, independientemente del hospital, el hecho de que el registro interno describa el CIE O04 aumenta la prevalencia de registros en el SIH. Se concluye que la falta de estandarización y el subregistro dificultan la obtención de información fidedigna en la base de datos nacionales del SUS, aumentando la invisibilidad del aborto legal.

Prevalência autorreferida de hipertensão e fatores associados em comunidades quilombolas do Rio Grande do Sul, Brasil / Self-reported prevalence of hypertension and associated factors in quilombola communities in the State of Rio Grande do Sul, Brazil

Resumo Este estudo teve como objetivo identificar a prevalência e fatores associados à hipertensão arterial (HA) em adultos quilombolas do Rio Grande do Sul (RS). Trata-se de um estudo transversal de base populacional, realizado em 2011, com 589 adultos responsáveis por domicílios e amostragem proporcional ao tamanho. O desfecho foi obtido com a pergunta: "Algum médico já lhe disse que você tem hipertensão?". Foi empregada regressão de Poisson, com variância robusta e entrada hierarquizada das variáveis. Por fim, foram calculadas as frações atribuíveis populacionais por componente (FAPC) para fatores modificáveis associados à HA. A prevalência autorreferida de HA foi de 38,3% (IC95% 31,4%-45,1%). A análise ajustada revelou associação do desfecho com faixa etária, escolaridade, consumo excessivo de álcool, circunferência da cintura acima do adequado e presença de diabetes. A análise dos FAPC revelou que, se os indivíduos tivessem maior escolaridade, a prevalência de HA seria reduzida. Diante da elevada prevalência de HA e da extrema vulnerabilidade social dessa população, políticas públicas que garantam seu acesso a direitos fundamentais (saúde, renda e escolaridade) poderiam ter impacto importante na diminuição desse desfecho.

Abstract The study sought to identify the prevalence of arterial hypertension (AH) and possible associated factors in adults residing in quilombola communities in the State of Rio Grande do Sul (RS). A transversal population-based study, carried out in 2011, included 589 adult households in quilombola communities in the State of RS, by sampling proportional to the size. The outcome was obtained by the question: "Has a doctor ever told you that you have hypertension?" Poisson regression with robust variance and hierarchical input variables were used. Finally, the population attributable fractions per component (PAFC) were calculated for modifiable factors associated to AH. The self-reported prevalence of AH was 38.3% (CI95% 31.4%-45.1%). Adjusted analysis revealed an association of the outcome with age group, education, excessive alcohol consumption, waist circumference and the presence of diabetes. PAFC analysis revealed that if the individuals had greater schooling, the prevalence of AH would be reduced. Given the high prevalence of AH and the extreme social vulnerability of this population, public policies that guarantee their access to fundamental rights (health, income and schooling) could have a significant impact in reducing this outcome.

Trends in hospitalizations for primary care sensitive conditions following the implementation of Family Health Teams in Belo Horizonte, Brazil.

OBJECTIVES: How to provide effective and efficient care to the burgeoning and aging populations of the major cities of low- and middle-income countries constitutes one of the principle public health issues of our times. We evaluated the Family Health Strategy, the Brazilian national health system's public approach to primary health care, in the major city of Belo Horizonte, describing trends and factors associated with hospitalizations for primary care sensitive conditions following the implementation of 506 family health teams, most of which were established in 2002. METHODS: We conducted an ecological study covering 2003 to 2006, using mixed models to investigate time trends in public system hospitalizations as well as their association with social vulnerability and primary care team characteristics. RESULTS: Sensitive conditions accounted for 115,340 (26.4%) hospitalizations. Over the 4-year period, hospitalizations for sensitive conditions declined by 17.9%, vs only 8.3% for non-sensitive ones (P<0.001). Hospitalization for sensitive conditions declined 22% for women in areas of high social vulnerability vs 9% for women in areas of low vulnerability (P<0.001); for men, 17% vs 10% (P=0.11). CONCLUSIONS: Though the ecologic nature of our study limits the confidence with which conclusions can be affirmed, the Family Health Strategy appears to have contributed to a major reduction in hospitalizations due to primary care sensitive conditions in this large Brazilian metropolis, while at the same time promoting greater health equity.

[Quality of prenatal care: traditional primary care and Family Health Strategy units in a city in southern Brazil]. / Qualidade do processo da assistência pré-natal: unidades básicas de saúde e unidades de Estratégia Saúde da Família em município no Sul do Brasil.

Prenatal care in traditional primary care units (UBS) and Family Health Strategy units (ESF) was evaluated by a cross-sectional study from July 2009 to February 2010 in Santa Maria, Rio Grande do Sul State, Brazil. Seven hundred and ninety-five postpartum women who had received prenatal care in either of the two types of units were interviewed. Four quality levels were used: level 1 (Kessner index modified by Takeda); level 2, which adds clinical obstetric procedures to level 1; level 3, which adds laboratory tests to level 1; and level 4, which includes all the above parameters. Prenatal care in the Family Health Strategy was superior to that of traditional primary care at all levels, with statistically significant differences in levels 1 and 2. Pregnant women received more guidance and prenatal care was superior in the Family Health Strategy. The study favored the Family Health Strategy, but improvement is still needed in the performance of procedures and laboratory tests in order to enhance prenatal care and strengthen primary care.

[Comparison of simple and multiple imputation methods using a risk model for surgical mortality as example]. / Comparação de métodos de imputação única e múltipla usando como exemplo um modelo de risco para mortalidade cirúrgica.

INTRODUCTION: It is common for studies in health to face problems with missing data. Through imputation, complete data sets are built artificially and can be analyzed by traditional statistical analysis. The objective of this paper is to compare three types of imputation based on real data. METHODS: The data used came from a study on the development of risk models for surgical mortality. The sample size was 450 patients. The imputation methods applied were: two single imputations and one multiple imputation and the assumption was MAR (Missing at Random). RESULTS: The variable with missing data was serum albumin with 27.1% of missing rate. The logistic models adjusted by simple imputation were similar, but differed from models obtained by multiple imputation in relation to the inclusion of variables. CONCLUSIONS: The results indicate that it is important to take into account the relationship of albumin to other variables observed, because different models were obtained in single and multiple imputations. Single imputation underestimates the variability generating narrower confidence intervals. It is important to consider the use of imputation methods when there is missing data, especially multiple imputation that takes into account the variability between imputations for estimates of the model.