Homeopathy for Chronic Non-specific Low Back Pain: Study Protocol for a Randomized, Double-Blind, Crossover, Placebo-Controlled Clinical Trial Investigating the Efficacy of the Biotherapic Lumbar Vertebra (The BIOVERT Trial).

BACKGROUND: Chronic non-specific low back pain (CNSLBP) lacks identifiable anatomical pathology and effective pharmacological treatment. Alternative approaches in homeopathy, specifically clinical homeopathy, utilize ultra-diluted (potentized) biological products. In Brazil, standardized biotherapics from sheep tissues, particularly fifty-millesimal (LM) potencies of sheep Lumbar Vertebra, have shown promise in alleviating CNSLBP. OBJECTIVES: Our objective is to present the study protocol of a clinical trial that will assess the efficacy and safety of the biotherapic Lumbar Vertebra LM2 in the short-term management of CNSLBP and to estimate its therapeutic duration. METHODS: A randomized, double-blind, crossover, placebo-controlled clinical trial spanning 8 weeks per participant was designed. Participants will include 120 individuals (aged 20 to 60 years) with clinically diagnosed CNSLBP by the study's physiotherapist. Exclusion criteria are radicular pain, signs of radiculopathy, specific lumbar spine disorders, pregnancy, or puerperium (up to 60 days after delivery). The medical intervention includes participants being randomly assigned to one of two treatment sequences: homeopathy-placebo or placebo-homeopathy. The treatments will consist of Lumbar Vertebra LM2 oral solution, topical cream, and indistinguishable placebos. Each treatment period will span 2 weeks, with a 4-week washout interval between them. Primary outcome is the assessment of changes in self-reported pain levels using the numeric rating scale (NRS) score, analyzed with a random effects model across both treatment periods. Secondary outcomes are assessment of changes in self-reported disability levels using the Oswestry Disability Index (ODI), analyzed with a random effects model across both treatment periods, and pain and disability variations, evaluated by the NRS score and ODI respectively, after the first and second treatment periods. Adverse events will be assessed at weeks 2 and 8. Pain medications will be used concomitantly. Adherence will be evaluated by the weight of medication returned/standard weight. DISCUSSION: The BIOVERT (Bioactive Vertebra) trial protocol is designed to investigate a homeopathic strategy for short-term CNSLBP treatment. Favorable outcomes for homeopathy could prompt subsequent studies evaluating the long-term effectiveness of LM potencies of Lumbar Vertebra for CNSLBP. TRIAL REGISTRATION: UMIN Clinical Trials Registry - ID: UMIN000051957.

Mobile dating apps use and sexual risk behavior among Brazilian undergraduate students.

INTRODUCTION: One of the most popular ways to meet new people in the modern world is through dating apps. However, its use may facilitate casual sexual encounters and quick partner changes, both of which associated to endangering sexual health in different populations. OBJECTIVE: To describe the use of mobile dating apps among undergraduate students at a major Brazilian public university and investigate its associations with sexual risk behaviors and sociodemographic factors. METHODS: This is a cross-sectional study based on a web survey. The link for participation was made available to students enrolled in undergraduate courses in the eight units of the University of São Paulo, Campus Ribeirão Preto. Use of dating apps, sociodemographic/behavioral profile, and sexual risk behaviors were among the variables studied. The distribution of apps users was calculated for each variable of interest, and prevalence ratios (PRs) were used for comparisons. PRs were reported with 95% confidence intervals. RESULTS: A total of 487 students participated, with 32.9% reporting using dating apps. Male participants were more likely to use. The use of dating apps was associated with having multiple sexual partners and risky behaviors such as smoking, alcohol consumption, and substance abuse. CONCLUSION: It is critical to describe the pattern of app use in undergraduate students and understand their influence on sexual health in order to avoid stigmatizing users. Additionally, this information can be helpful in directing the creation of strategies for using these apps as resources to promote health, such as the information-sharing regarding the sexual health.

What causes obesity in children and adolescents?

OBJECTIVE: To present the different aspects that may be involved in the genesis and maintenance of obesity in children and adolescents. DATA SOURCE: Narrative review of articles published in the PubMed, Scielo, Lilacs, Scopus and Google Scholar databases, using the search terms: overweight, obesity, pre-conception, prenatal, infants, schoolchildren, children, and adolescents. The search was conducted in studies written in Portuguese, English and Spanish, including narrative, integrative or systematic reviews, meta-analyses, cross-sectional, case-control and cohort studies, published between 2003 and 2023. DATA SYNTHESIS: A total of 598 studies were initially screened and 60 of them, which showed the main biopsychosocial aspects related to greater risks of excessive adiposity in the pediatric age, were included in the review. The data were presented taking into account the incidence of risk factors and their consequences in six periods: pre-conception, pre-natal, infant, preschool, school age, and adolescence. CONCLUSIONS: The causal factors described in the scientific literature that have been shown to be related to obesity in childhood and adolescence are presented.

Knowledge and perceptions on the existence of Voluntary Counseling and Testing (VCT) Centers and associated factors among Brazilian LGBT+ individuals.

In Brazil, the advent of voluntary and counseling testing (VCT) has provided many benefits in the fight against AIDS. A sectional open web survey was conducted to investigate the Brazilian LGBT+ individuals' knowledge and perceptions of the existence of VCT centers and their associations with risk behavior and other variables of interest. The study instrument included questions on sociodemographic and behavioral variables, knowledge on VCT, access to and use of it, beliefs about HIV infection, test results, and risk perception. The Risk Behavior Score for HIV infection (RBS) was also used. A total of 1,630 volunteers participated in the survey, of whom 56.8% were men. Of these, 96.1% declared themselves as (MSM). Almost 50% of the participants had never heard about the existence of VCT, which was a higher knowledge score among MSM. A low frequency of participants had a clear perception of the risks to which they are exposed, whereas those with higher RBS were aware of the existence of VCT. As VCT is critical for the implementation of policies to combat and prevent HIV and other sexually transmitted diseases, our results can contribute to a better understanding of the influence of VCT on the frequency of testing, serological surveillance, and routine counseling for key populations.

Knowledge and perceptions on the existence of Voluntary Counseling and Testing (VCT) Centers and associated factors among Brazilian LGBT+ individuals / Conhecimento e percepções sobre a existência dos Centros de Testagem e Aconselhamento (CTA) e fatores associados em pessoas LGBT+ brasileiras

Abstract In Brazil, the advent of voluntary and counseling testing (VCT) has provided many benefits in the fight against AIDS. A sectional open web survey was conducted to investigate the Brazilian LGBT+ individuals' knowledge and perceptions of the existence of VCT centers and their associations with risk behavior and other variables of interest. The study instrument included questions on sociodemographic and behavioral variables, knowledge on VCT, access to and use of it, beliefs about HIV infection, test results, and risk perception. The Risk Behavior Score for HIV infection (RBS) was also used. A total of 1,630 volunteers participated in the survey, of whom 56.8% were men. Of these, 96.1% declared themselves as (MSM). Almost 50% of the participants had never heard about the existence of VCT, which was a higher knowledge score among MSM. A low frequency of participants had a clear perception of the risks to which they are exposed, whereas those with higher RBS were aware of the existence of VCT. As VCT is critical for the implementation of policies to combat and prevent HIV and other sexually transmitted diseases, our results can contribute to a better understanding of the influence of VCT on the frequency of testing, serological surveillance, and routine counseling for key populations.

Resumo No Brasil, o advento dos centros de testagem e aconselhamento (CTA) trouxe muitos benefícios na luta contra a Aids. Um estudo transversal do tipo web survey foi realizado para investigar o conhecimento e as percepções dos indivíduos LGBT+ brasileiros sobre a existência dos CTAs e suas associações com comportamentos de risco e outras variáveis de interesse. O questionário incluiu questões sociodemográficas e comportamentais, conhecimento sobre o CTA, acesso e uso, crenças sobre a infecção pelo HIV, resultados de testes e percepção de risco. O escore de comportamento de risco (RBS) também foi utilizado. Participaram 1.630 voluntários (56,8% homens). Destes, 96,1% se autodeclararam homens que fazem sexo com homens (HSH). Quase 50% dos participantes não conhecem os CTAs, sendo este conhecimento maior entre os HSHs. Uma baixa frequência de participantes tem percepção clara dos riscos a que estão expostos, e os HSHs com maior pontuação no RBS estão cientes da existência dos CTAs, que são fundamentais na implementação de políticas de combate e prevenção ao HIV e outras doenças sexualmente transmissíveis. Nossos resultados contribuem para a melhor compreensão da sua influência na frequência de testagem, na vigilância do status sorológico e no aconselhamento em populações-chave.

Barriers and facilitators to utilizing digital health technologies by healthcare professionals.

Digital technologies change the healthcare environment, with several studies suggesting barriers and facilitators to using digital interventions by healthcare professionals (HPs). We consolidated the evidence from existing systematic reviews mentioning barriers and facilitators for the use of digital health technologies by HP. Electronic searches were performed in five databases (Cochrane Database of Systematic Reviews, Embase®, Epistemonikos, MEDLINE®, and Scopus) from inception to March 2023. We included reviews that reported barriers or facilitators factors to use technology solutions among HP. We performed data abstraction, methodological assessment, and certainty of the evidence appraisal by at least two authors. Overall, we included 108 reviews involving physicians, pharmacists, and nurses were included. High-quality evidence suggested that infrastructure and technical barriers (Relative Frequency Occurrence [RFO] 6.4% [95% CI 2.9-14.1]), psychological and personal issues (RFO 5.3% [95% CI 2.2-12.7]), and concerns of increasing working hours or workload (RFO 3.9% [95% CI 1.5-10.1]) were common concerns reported by HPs. Likewise, high-quality evidence supports that training/educational programs, multisector incentives, and the perception of technology effectiveness facilitate the adoption of digital technologies by HPs (RFO 3.8% [95% CI 1.8-7.9]). Our findings showed that infrastructure and technical issues, psychological barriers, and workload-related concerns are relevant barriers to comprehensively and holistically adopting digital health technologies by HPs. Conversely, deploying training, evaluating HP's perception of usefulness and willingness to use, and multi-stakeholders incentives are vital enablers to enhance the HP adoption of digital interventions.

The global effect of digital health technologies on health workers' competencies and health workplace: an umbrella review of systematic reviews and lexical-based and sentence-based meta-analysis.

Systematic reviews have quantified the effectiveness, feasibility, acceptability, and cost-effectiveness of digital health technologies (DHTs) used by health-care workers. We aimed to collate available evidence on technologies' effect on health-care workers' competencies and performance. We searched the Cochrane Database of Systematic Reviews, Embase, MEDLINE, Epistemonikos, and Scopus for reviews published from database inception to March 1, 2023. Studies assessing the effects of DHTs on the organisational, socioeconomic, clinical, and epidemiological levels within the workplace, and on health-care workers' performance parameters, were included. Data were extracted and clustered into 25 domains using vote counting based on the direction of effect. The relative frequency of occurrence (RFO) of each domain was estimated using R software. AMSTAR-2 tool was used to appraise the quality of reporting, and the Confidence in the Evidence from Reviews of Qualitative research approach developed by Grading of Recommendations Assessment, Development and Evaluation was used to analyse the certainty of evidence among included studies. The 12 794 screened reviews generated 132 eligible records for assessment. Top-ranked RFO identifiers showed associations of DHT with the enhancement of health-care workers' performance (10·9% [95% CI 5·3-22·5]), improvement of clinical practice and management (9·8% [3·9-24·2]), and improvement of care delivery and access to care (9·2% [4·1-20·9]). Our overview found that DHTs positively influence the daily practice of health-care workers in various medical specialties. However, poor reporting in crucial domains is widely prevalent in reviews of DHT, hindering our findings' generalisability and interpretation. Likewise, most of the included reviews reported substantially more data from high-income countries. Improving the reporting of future studies and focusing on low-income and middle-income countries might elucidate and answer current knowledge gaps.

Clinical Evolution of Preschool Picky Eater Children Receiving Oral Nutritional Supplementation during Six Months: A Prospective Controlled Clinical Trial.

OBJECTIVE: To determine if oral nutritional supplementation of picky eater children has a beneficial effect in addition to nutritional guidance on anthropometric parameters, nutrient intake, appetite, physical activity, and health complications. METHODS: This is a randomized, single-blind, controlled clinical trial that included Brazilian picky eater children aged 24 to 60 months. The individuals were randomized into a control group (CG) (n = 17) and an intervention group (IG) (n = 18), and were followed up in seven meetings for 180 days (baseline plus one meeting every 30 days). The CG received nutritional guidance for food selectivity, while the IG received the same guidance plus oral nutritional supplementation. Anthropometric and nutrient intake assessments were carried out, and appetite, physical activity and health complications were investigated. RESULTS: In the IG, the z-score of weight and height increased significantly over time (p < 0.05), while the body fat percentage (BFP) and BMI z-score remained unchanged. The percentage of inadequate intake of vitamins D, C and folate reduced in the IG over time compared to the CG (p < 0.05). In the IG, the score assigned by parents to the appetite scale increased over time (p < 0.05). There was no difference between the groups in the scores on the physical activity and global health scales, and in the number of health complications. CONCLUSIONS: Picky eater children that were supplemented increased their weight not by gaining fat, but due to an increase in stature, as shown by BMI z-score and BFP, that remained unchanged. Furthermore, they showed a decrease in inadequate micronutrient intake during the intervention. An improvement in appetite was also observed over time, attesting to the benefit of supplementation.

Knowledge, attitudes, and practices towards COVID-19 among the population of the state of São Paulo, Brazil.

BACKGROUND: The population's adherence to COVID-19 preventive measures is influenced by their knowledge, attitudes, and practices (KAP) towards the disease, making research into people's awareness of the disease essential. The present survey was designed to assess KAP towards COVID-19 among the population of the state of São Paulo, Brazil. METHODS: An online questionnaire was disseminated via social media between September 14 and October 5, 2020. The intended population was Brazilians over the age of 18, living in the state of São Paulo. RESULTS: A total of 1,111 individuals completed the questionnaire. The majority were women (71.6%), 31.6% were aged 31-40 years old, and 82.8% had higher education. Among the participants, 17.5% reported that they had taken some medication without a medical prescription to prevent COVID-19. The participants showed good knowledge about the transmission and prevention of the disease. The knowledge mean score was lower among participants with complete high school or less, with poor self-perception of their health status, who almost never seek information about COVID-19, and those who are not sure to belong to a risk group for the disease. Only 51.3% of the participants believed that COVID-19 would finally be successfully controlled, and 56.6% were confident that Brazil could win the battle against the virus. CONCLUSIONS: Participants demonstrated good knowledge of COVID-19 but were pessimistic about the pandemic's future. The findings of this study can help in the development of effective health communication strategies to promote better knowledge and a positive attitude about prevention measures.

Vacinação contra poliomielite no Brasil de 2011 a 2021: sucessos, reveses e desafios futuros / Vaccination against poliomyelitis in Brazil from 2011 to 2021: successes, setbacks, and challenges ahead

Resumo A queda de coberturas vacinais (CV) na infância, entre elas a da poliomielite, vem se tornando uma preocupação sanitária. O objetivo foi analisar a tendência temporal das coberturas das três doses da vacina contra a poliomielite nos primeiros 12 meses de vida entre 2011 e 2021, com destaque na pandemia de COVID-19, além de mapear as CV no Brasil. Foi realizado um estudo ecológico com técnicas de série temporal interrompida (STI) e análise espacial, a partir dos dados do Sistema de Informação do Programa Nacional de Imunização. A tendência da CV foi ajustada pelo estimador de variância de Newey-West, segundo as unidades federadas e o Índice de Privação Brasileiro. A distribuição da CV foi estimada por modelos bayesianos e os aglomerados espaciais pelos índices de Moran global e local, identificando áreas de menor cobertura nas Regiões de Saúde. Observa-se perda da CV ao longo do período em todas as regiões do país, sendo maiores no Norte e no Nordeste e se acentuando durante a pandemia. As maiores quedas foram identificadas em estados e regiões de saúde com maior vulnerabilidade social. A queda na CV mostra que o risco de reintrodução do vírus selvagem é iminente e os desafios precisam ser enfrentados com o fortalecimento do Sistema Único de Saúde.

Abstract The drop in childhood vaccination coverage (VC), including poliomyelitis, has become a health concern. The objective was to analyze the temporal trend of coverage of the three doses of the polio vaccine in the first 12 months of life between 2011 and 2021, in addition to mapping vaccination coverage in Brazil, including the COVID-19 pandemic period. An ecological study was carried out using interrupted time series (STI) techniques and spatial analysis, with data from the National Immunization Program Information System. The VC trend was adjusted by the Newey-West variance estimator according to the federated units and the Brazilian Deprivation Index. The VC distribution was estimated by Bayesian models and the spatial clusters by the global and local Moran index, identifying areas of lower coverage in the health regions. There was a reduction in the VC over the period in all regions, being more pronounced in the North and Northeast regions and during the Covid-19 pandemic. The biggest drops were identified in states and health regions with greater social vulnerability after 2019. The drop in VC shows that the risk of reintroduction of the wild virus is imminent and the challenges need to be faced with the strengthening of the Brazilian Health System (SUS).

Vacinação do sarampo no Brasil: onde estivemos e para onde vamos? / Measles vaccination in Brazil: where have we been and where are we headed?

Resumo A reemergência de doenças imunopreveníveis devido à queda das coberturas vacinais (CV) tem sido documentada em vários países. O objetivo foi analisar a CV, a homogeneidade das CV e os casos de sarampo no Brasil de 2011 a 2021, com enfoque no período da pandemia de COVID-19, sua tendência temporal, distribuição espaço-temporal e fatores associados aos aglomerados de menor CV. Trata-se de um estudo ecológico sobre a CV de sarampo (dose 1), com métodos de série temporal interrompida e de avaliação da disposição espaço-temporal, por meio do teste de varredura na identificação de aglomerados de CV. A partir de 2015, observa-se queda progressiva das CV e da homogeneidade, acentuando-se após 2020 em todas as regiões, particularmente Norte e Nordeste. Aglomerados de baixa CV foram associados a piores indicadores de desenvolvimento humano, desigualdade social e menor acesso à Estratégia de Saúde da Família. No Brasil, a pandemia intensificou as iniquidades em saúde, com baixas CV de sarampo em municípios socialmente mais vulneráveis e desiguais. Há risco de circulação do vírus, reafirmando o desafio de fortalecer a atenção básica, aprimorar a comunicação em saúde e garantir acesso à vacina, diminuindo oportunidades perdidas de vacinação e a hesitação vacinal.

Abstract The re-emergence of vaccine-preventable diseases due to the decline in vaccine coverage (VC) has been documented in several countries. The objective was to analyze the VC, the homogeneity of VC, and measles cases in Brazil from 2011 to 2021, focusing on the period of the COVID-19 pandemic, its temporal trend, space-time distribution, and factors associated with clusters of lower VC. This is an ecological study on measles VC (dose 1), with methods of interrupted time series and evaluation of spatio-temporal disposition, through the sweep test to identify clusters of VC. Starting in 2015, we observe a progressive decline in VC and homogeneity, with an accentuation after 2020, in all regions, particularly in the North and Northeast. Low VC clusters were associated with worse human development indicators, social inequality, and less access to the Family Health Strategy. In Brazil, the pandemic intensified health inequalities with low VC of measles in socially more vulnerable and unequal municipalities. There is a risk of virus circulation, however, the challenge of strengthening primary care, improving health communication and guaranteeing access to the vaccine, reducing missed opportunities for vaccination and vaccine hesitancy, is highlighted.

Vaccination against poliomyelitis in Brazil from 2011 to 2021: successes, setbacks, and challenges ahead. / Vacinação contra poliomielite no Brasil de 2011 a 2021: sucessos, reveses e desafios futuros.

The drop in childhood vaccination coverage (VC), including poliomyelitis, has become a health concern. The objective was to analyze the temporal trend of coverage of the three doses of the polio vaccine in the first 12 months of life between 2011 and 2021, in addition to mapping vaccination coverage in Brazil, including the COVID-19 pandemic period. An ecological study was carried out using interrupted time series (STI) techniques and spatial analysis, with data from the National Immunization Program Information System. The VC trend was adjusted by the Newey-West variance estimator according to the federated units and the Brazilian Deprivation Index. The VC distribution was estimated by Bayesian models and the spatial clusters by the global and local Moran index, identifying areas of lower coverage in the health regions. There was a reduction in the VC over the period in all regions, being more pronounced in the North and Northeast regions and during the Covid-19 pandemic. The biggest drops were identified in states and health regions with greater social vulnerability after 2019. The drop in VC shows that the risk of reintroduction of the wild virus is imminent and the challenges need to be faced with the strengthening of the Brazilian Health System (SUS).

A queda de coberturas vacinais (CV) na infância, entre elas a da poliomielite, vem se tornando uma preocupação sanitária. O objetivo foi analisar a tendência temporal das coberturas das três doses da vacina contra a poliomielite nos primeiros 12 meses de vida entre 2011 e 2021, com destaque na pandemia de COVID-19, além de mapear as CV no Brasil. Foi realizado um estudo ecológico com técnicas de série temporal interrompida (STI) e análise espacial, a partir dos dados do Sistema de Informação do Programa Nacional de Imunização. A tendência da CV foi ajustada pelo estimador de variância de Newey-West, segundo as unidades federadas e o Índice de Privação Brasileiro. A distribuição da CV foi estimada por modelos bayesianos e os aglomerados espaciais pelos índices de Moran global e local, identificando áreas de menor cobertura nas Regiões de Saúde. Observa-se perda da CV ao longo do período em todas as regiões do país, sendo maiores no Norte e no Nordeste e se acentuando durante a pandemia. As maiores quedas foram identificadas em estados e regiões de saúde com maior vulnerabilidade social. A queda na CV mostra que o risco de reintrodução do vírus selvagem é iminente e os desafios precisam ser enfrentados com o fortalecimento do Sistema Único de Saúde.

Measles vaccination in Brazil: where have we been and where are we headed? / Vacinação do sarampo no Brasil: onde estivemos e para onde vamos?

The re-emergence of vaccine-preventable diseases due to the decline in vaccine coverage (VC) has been documented in several countries. The objective was to analyze the VC, the homogeneity of VC, and measles cases in Brazil from 2011 to 2021, focusing on the period of the COVID-19 pandemic, its temporal trend, space-time distribution, and factors associated with clusters of lower VC. This is an ecological study on measles VC (dose 1), with methods of interrupted time series and evaluation of spatio-temporal disposition, through the sweep test to identify clusters of VC. Starting in 2015, we observe a progressive decline in VC and homogeneity, with an accentuation after 2020, in all regions, particularly in the North and Northeast. Low VC clusters were associated with worse human development indicators, social inequality, and less access to the Family Health Strategy. In Brazil, the pandemic intensified health inequalities with low VC of measles in socially more vulnerable and unequal municipalities. There is a risk of virus circulation, however, the challenge of strengthening primary care, improving health communication and guaranteeing access to the vaccine, reducing missed opportunities for vaccination and vaccine hesitancy, is highlighted.

A reemergência de doenças imunopreveníveis devido à queda das coberturas vacinais (CV) tem sido documentada em vários países. O objetivo foi analisar a CV, a homogeneidade das CV e os casos de sarampo no Brasil de 2011 a 2021, com enfoque no período da pandemia de COVID-19, sua tendência temporal, distribuição espaço-temporal e fatores associados aos aglomerados de menor CV. Trata-se de um estudo ecológico sobre a CV de sarampo (dose 1), com métodos de série temporal interrompida e de avaliação da disposição espaço-temporal, por meio do teste de varredura na identificação de aglomerados de CV. A partir de 2015, observa-se queda progressiva das CV e da homogeneidade, acentuando-se após 2020 em todas as regiões, particularmente Norte e Nordeste. Aglomerados de baixa CV foram associados a piores indicadores de desenvolvimento humano, desigualdade social e menor acesso à Estratégia de Saúde da Família. No Brasil, a pandemia intensificou as iniquidades em saúde, com baixas CV de sarampo em municípios socialmente mais vulneráveis e desiguais. Há risco de circulação do vírus, reafirmando o desafio de fortalecer a atenção básica, aprimorar a comunicação em saúde e garantir acesso à vacina, diminuindo oportunidades perdidas de vacinação e a hesitação vacinal.

Perceptions and practices of the Brazilian LGBT+ population toward blood donation.

In May 2020, after years of demands by activists and in light of COVID-19-related blood shortages, the Brazilian Federal Supreme Court abolished the rules that demanded a 12-month celibacy period for men who have sex with men (MSM) to donate blood. The objective of this open web survey was to assess the perceptions and practices regarding blood donation and blood donation rules among members of the Brazilian LGBT+ community. The data collection was conducted between October 2019 and March 2020, before the changes in the rules for blood donation and before the onset of the COVID-19 pandemic in Brazil. A total of 1639 adult individuals, self-declared as LGBT+ , participated (54.3 % MSM, 2.2 non-MSM, 43.5 % women). As expected, most of the study participants did not agree with the 12-month deferral period for MSM donate blood. Blood donation was already practiced by MSM, even before the abolition of the restrictions on donation. Among MSM and women, 38.7 % and 41.0 % have already donated blood, respectively. A significant number of participants reported lying in screening interviews at blood banks in order to be able to donate, and many said they knew people who were MSM and disobeyed the rules for donation, even though they knew them. Therefore, the practice of blood donation was already present among these people, even before the restriction policy change, confirming the need for revised rules for blood donation.

Cross-cultural adaptation, content validity, and item analysis of the Objective and Subjective Knowledge and HIV Testing Scale for the Brazilian population.

OBJECTIVES: To propose a Portuguese version of the Objective and Subjective Knowledge and HIV Testing Scale (OSK-HIV-TS), assess its content validity, and perform item analysis after administration to a sample of undergraduate students. METHODS: Three translators translated the OSK-HIV-TS into Portuguese. Judges evaluated each item of a consensus version of the translated instrument for semantic, idiomatic, cultural, and conceptual equivalence. A consensus committee reviewed a back-translation against the original version of the OSK-HIV-TS. Content validity was calculated with the content validity index (CVI) and item analysis was conducted using Classical Test Theory (CTT). RESULTS: The translated scale achieved semantic, idiomatic, conceptual, and cultural equivalence to the original version. A total of 491 undergraduate students participated and the distribution of students' responses to the OSK-HIV-TS revealed a high proportion of correct answers. All items were classified as easy or very easy and only item 16 was classified having strong discrimination power according to the discrimination index. CONCLUSION: The OSK-HIV-TS is a novel instrument in the Brazilian literature for assessing human immunodeficiency virus (HIV) knowledge and should inspire more research into HIV/acquired immunodeficiency syndrome (AIDS) behavior and associated factors, which, despite being essential and necessary, is still lacking in the Brazilian literature.

Defining ambulation status in patients with Duchenne muscular dystrophy using the 10-metre walk test and the motor function measure scale.

PURPOSE: Timed functional tests have been explored to understand the natural history of Duchenne muscular dystrophy (DMD) and to establish warning signs of loss of gait. This study verified whether the combination of the 10-metre walk test (10MWT) and the motor function measure (MFM) could classify the ambulation status of DMD patients. METHOD: Thirty-two patients, aged between 5 and 22 years, with independent gait initially evaluated over 11 years participated in the study. Two groups were created: ambulators and non-ambulators. For both groups, we calculated a 10MWT ratio, by dividing the time spent to perform the last evaluation by the penultimate evaluation, and a MFM dimension-1 score (MFM-D1), collected in the same period. For the statistical analysis, the CART algorithm ("rpart" package in R) classified the patients into ambulators and non-ambulators according to two continuous variables: the 10MWT ratio and the MFM-D1 score. RESULTS: The cut-off points were 1.1 for the 10MWT ratio and 26 points for the MFM-D1, which distinguished 70% of the patients as either ambulators or non-ambulators. CONCLUSION: This simple measurement strategy can be used by therapists to adjust their rehabilitation strategies and goals.Implications for rehabilitationCombination of 10MWT ratio with MFM-D1 reveal an "indicator" for the ambulation status of patients with DMD.Physiotherapists can guide clinical care and prepare the patient and family for loss of gait.CART algorithm describes how we classified the patients according to two continuous variables.70% Of the patients with DMD can be distinguished as either ambulators or non-ambulators.

Cross-cultural adaptation, content validity, and item analysis of the Objective and Subjective Knowledge and HIV Testing Scale for the Brazilian population

Abstract Objectives To propose a Portuguese version of the Objective and Subjective Knowledge and HIV Testing Scale (OSK-HIV-TS), assess its content validity, and perform item analysis after administration to a sample of undergraduate students. Methods Three translators translated the OSK-HIV-TS into Portuguese. Judges evaluated each item of a consensus version of the translated instrument for semantic, idiomatic, cultural, and conceptual equivalence. A consensus committee reviewed a back-translation against the original version of the OSK-HIV-TS. Content validity was calculated with the content validity index (CVI) and item analysis was conducted using Classical Test Theory (CTT). Results The translated scale achieved semantic, idiomatic, conceptual, and cultural equivalence to the original version. A total of 491 undergraduate students participated and the distribution of students' responses to the OSK-HIV-TS revealed a high proportion of correct answers. All items were classified as easy or very easy and only item 16 was classified having strong discrimination power according to the discrimination index. Conclusion The OSK-HIV-TS is a novel instrument in the Brazilian literature for assessing human immunodeficiency virus (HIV) knowledge and should inspire more research into HIV/acquired immunodeficiency syndrome (AIDS) behavior and associated factors, which, despite being essential and necessary, is still lacking in the Brazilian literature.

Brazilian Adults' Attitudes and Practices Regarding the Mandatory COVID-19 Vaccination and Their Hesitancy towards Childhood Vaccination.

BACKGROUND: This study investigated the attitudes and practices of Brazilian adults regarding the mandatory COVID-19 vaccination and their hesitancy towards the vaccination of children. METHODS: Between March and May 2022, Brazilian adults answered an online questionnaire distributed through social media. The SAGE-WG questionnaire was adapted to measure hesitancy to the vaccination of children. RESULTS: Of the 1007 participants, 67.4% believed that adult COVID-19 vaccination should be mandatory. Just over half of the participants (51.5%) believed that parents and/or guardians should decide if their children should be vaccinated against COVID-19 or not and 9.1% were unsure. Individuals who were younger, non-religious and had higher awareness of COVID-19 risks and critics of the federal government's performance in combating the pandemic were more likely to agree with mandatory adult vaccination. However, less agreement among parents and/or guardians concerning children's vaccination was observed, with lower scores for hesitancy to the vaccination of children. CONCLUSION: In Brazil, there is still far from a consensus on mandatory COVID-19 vaccination for adults and a significant proportion of the population believes that parents and/or guardians should be free to decide on their children's vaccination. These views are associated with age, religion, knowledge of COVID-19 risks and political inclination.

Influence of high altitude on the expression of HIF-1 and on the prognosis of Ecuadorian patients with gastric adenocarcinoma.

Since the incidence of gastric adenocarcinoma (GA) is high in populations living at high altitudes, we evaluated the influence of altitude on the expression of HIF-1 and survival of Ecuadorian GA patients. METHOD: 155 GA cases were studied: 56 from coastal (GAC) and 99 from mountainous regions (GAM), and 74 non-GA controls (25 coast and 49 mountain). The expression of HIF-1/HER2 was analyzed by immunohistochemistry. Analyses were performed using Fisher's exact and Breslow-Day tests for homogeneity and Kaplan-Meier curves and restricted median survival time ΔRMST. RESULTS: HIF-1 was overexpressed in normal/inflamed gastric mucosa, especially in mountainous non-GA patients (p = 0.001). There was no difference between GAC and GAM in terms of age/gender, HIF-1/HER2 expression, stage/tumor location. Median survival at 120 months was significantly higher among GAC, with a difference (ΔRMST) of 43.7 months (95% CI 29.5, 57.8) (p < 0.001) and those with positive HIF-1 expression: ΔRMST 26.6 months (95% CI 11.0, 42.1) (p < 0.001). Positive HIF-1 expression was associated with better GAM survival, with ΔRMST 33.6 months (95% CI 14.2, 52.9) (p < 0.001). CONCLUSION: Despite the limitations of this retrospective study, GA patients in the coastal region and those who expressed HIF-1 exhibited a better prognosis, but this factor was associated with better survival only in the mountain region.