COVID-19 and long-term impact on symptoms and Health-Related Quality of Life in Costa Rica: the RESPIRA cohort study.

BACKGROUND: Evidence continues to accumulate regarding the potential long-term health consequences of COVID-19 in the population. To distinguish between COVID-19-related symptoms and health limitations from those caused by other conditions, it is essential to compare cases with community controls using prospective data ensuring case-control status. The RESPIRA study addresses this need by investigating the lasting impact of COVID-19 on Health-related Quality of Life (HRQoL) and symptomatology in a population-based cohort in Costa Rica, thereby providing a robust framework for controlling HRQoL and symptoms. METHODS: The study comprised 641 PCR-confirmed, unvaccinated cases of COVID-19 and 947 matched population-based controls. Infection was confirmed using antibody tests on enrollment serum samples and symptoms were monitored monthly for 6 months post-enrolment. Administered at the 6-month visit (occurring between 6- and 2-months post-diagnosis for cases and 6 months after enrollment for controls), HRQoL and Self-Perceived Health Change were assessed using the SF-36, while brain fog, using three items from the Mental Health Inventory (MHI). Regression models were utilized to analyze SF-36, MHI scores, and Self-Perceived Health Change, adjusted for case/control status, severity (mild case, moderate case, hospitalized) and additional independent variables. Sensitivity analyses confirmed the robustness of the findings. RESULTS: Cases showed significantly higher prevalences of joint pain, chest tightness, and skin manifestations, that stabilized at higher frequencies from the fourth month post-diagnosis onwards (2.0%, 1.2%, and 0.8% respectively) compared to controls (0.9%, 0.4%, 0.2% respectively). Cases also exhibited significantly lower HRQoL than controls across all dimensions in the fully adjusted model, with a 12.4 percentage-point difference [95%CI: 9.4-14.6], in self-reported health compared to one year prior. Cases reported 8.0% [95%CI: 4.2, 11.5] more physical limitations, 7.3% [95%CI: 3.5, 10.5] increased lack of vitality, and 6.0% [95%CI: 2.4, 9.0] more brain fog compared to controls with similar characteristics. Undiagnosed cases detected with antibody tests among controls had HRQoL comparable to antibody negative controls. Differences were more pronounced in individuals with moderate or severe disease and among women. CONCLUSIONS: PCR-confirmed unvaccinated cases experienced prolonged HRQoL reductions 6 months to 2 years after diagnosis, this was particularly the case in severe cases and among women. Mildly symptomatic cases showed no significant long-term sequelae.

Estimating vaccine effectiveness against SARS-CoV-2 infection, hospitalization and death from ecologic data in Costa Rica.

BACKGROUND: Clinical trials and individual-level observational data in Israel demonstrated approximately 95% effectiveness of mRNA-based vaccines against symptomatic SARS-CoV-2 infection. Individual-level data are not available in many countries, particularly low- and middle- income countries. Using a novel Poisson regression model, we analyzed ecologic data in Costa Rica to estimate vaccine effectiveness and assess the usefulness of this approach. METHODS: We used national data from December 1, 2020 to May 13, 2021 to ascertain incidence, hospitalizations and deaths within ecologic units defined by 14 age groups, gender, 105 geographic areas, and day of the epidemic. Within each unit we used the proportions of the population with one and with two vaccinations, primarily tozinameran. Using a non-standard Poisson regression model that included an ecologic-unit-specific rate factor to describe rates without vaccination and a factor that depended on vaccine effectiveness parameters and proportions vaccinated, we estimated vaccine effectiveness. RESULTS: In 3.621 million persons aged 20 or older, there were 125,031 incident cases, 7716 hospitalizations, and 1929 deaths following SARS-CoV-2 diagnosis; 73% of those aged ≥ 75 years received two doses. For one dose, estimated effectiveness was 59% (95% confidence interval 53% to 64%) for SARS-CoV-2 incidence, 76% (68% to 85%) for hospitalizations, and 63% (47% to 80%) for deaths. For two doses, the respective estimates of effectiveness were 93% (90% to 96%), 100% (97% to 100%), and 100% (97% to 100%). CONCLUSIONS: These effectiveness estimates agree well with findings from clinical trials and individual-level observational studies and indicate high effectiveness in the general population of Costa Rica. This novel statistical approach is promising for countries where ecologic, but not individual-level, data are available. The method could also be adapted to monitor vaccine effectiveness over calendar time.

[COVID-19 deaths: Distribution by age and universal medical coverage in 22 countriesMortes por COVID-19: distribuição por idade e universalidade da cobertura médica em 22 países]. / Defunciones por COVID-19: distribución por edad y universalidad de la cobertura médica en 22 países.

OBJECTIVE: Relate standardized age distribution of COVID-19 deaths in 22 countries in the Americas and Europe to different indicators of population characteristics and health systems. METHODS: Distributions of COVID-19 deaths by age group in 22 countries of the Americas and Europe were standardized based on the age pyramid of the world's population. Correlations were calculated between the standardized proportion of people aged <60 years among the deceased and each of six indicators. RESULTS: Standardization based on the world age pyramid revealed considerable differences in age distribution among countries; the proportion of people aged <60 years was higher in Latin America and the United States than in Canada or Western Europe. The standardized proportion of people aged <60 years among persons who died of COVID-19 is strongly correlated to the existence of universal quality medical coverage (r=-0.92, p<0.01). This relationship remained significant after being adjusted for the other indicators. CONCLUSION: We propose that weaknesses in medical coverage of the population may have created higher case-fatality in populations aged <60 years in Latin America and the United States.

OBJETIVO: Correlacionar a distribuição etária padronizada de mortes por COVID-19 em 22 países das Américas e da Europa com diversos indicadores das características das populações e dos sistemas de saúde. MÉTODOS: As distribuições das mortes por COVID-19 por faixa etária em 22 países das Américas e da Europa foram padronizadas pela pirâmide etária da população mundial. Foram calculadas correlações entre a proporção padronizada de pessoas com menos de 60 anos entre as pessoas que morreram e cada um dos seis indicadores. RESULTADOS: Foram evidenciadas diferenças importantes de distribuição etária entre os países estudados após a padronização pela pirâmide etária da população mundial, sendo maior a proporção de mortes de pessoas com menos de 60 anos na América Latina e nos Estados Unidos que no Canadá ou na Europa ocidental. A proporção padronizada de pessoas com menos de 60 anos entre as pessoas que morreram por COVID-19 está fortemente correlacionada com a universalidade de cobertura médica de qualidade (r=­0,92, p<0,01). Esta correlação se manteve significativa após o ajuste para outros indicadores analisados. CONCLUSÃO: O nosso estudo sugere que falhas na cobertura médica da população podem ter provocado maior letalidade nas pessoas com menos de 60 anos na América Latina e nos Estados Unidos.

Socioeconomic inequalities in cancer mortality: Is Costa Rica an exception to the rule?

Socioeconomic inequalities in cancer mortality have been described for a range of cancers sites worldwide, using diverse measures of socioeconomic position (SEP). These studies have shown a negative social gradient where lower SEP was associated with greater odds of having cancer, particularly in men. However, there is a lack of information regarding low and middle-income countries. The objective of our study was to analyze the relationship between the socioeconomic characteristics of patients' residential districts and mortality due to cancer in Costa Rica between 2011 and 2017. An ecological study at the level of the district of residence was conducted using the multilevel mixed-effects Poisson regression. All cancer-caused deaths between January 1, 2011 and December 31, 2017 were included (n = 32,117). Eleven cancer sites were analyzed independently. The 477 Costa Rican districts were divided by area (urban/mixed/rural) and wealth using census data. All-cancer combined a significant association between cancer mortality and wealth was found. Cancer mortality was lower in the poorest as compared to the richest districts (IRRQ4 = 0.79 [0.73-0.86]). The majority of cancer sites followed a similar pattern, showing a positive social gradient. These results contradict the international literature mostly conducted in high-income countries. These findings confirmed the importance of conducting studies in middle-income countries, since the socioeconomic and cultural contexts are different from those in high-income countries, which influence the social distribution of lifestyles and risk behaviors.

[Sociodemographic characteristics associated with the prevalence of tobacco use in Costa RicaCaracterísticas sociodemográficas associadas à prevalência do consumo de tabaco na Costa Rica]. / Características sociodemográficas asociadas a la prevalencia del consumo de tabaco en Costa Rica.

OBJECTIVE: To determine the associations between sociodemographic characteristics and the current prevalence of tobacco use in Costa Rica, based on the results of the Global Adult Tobacco Survey (GATS). METHODS: Cross-sectional observational epidemiological study, country-wide (n = 8607), that used the sociodemographic variables included in GATS 2015. A logistic regression model was designed to predict the impact of those variables on current tobacco use. The dependent variable is current tobacco use, considering the social determinants available in the survey: sex, educational level, area of residence, age, and household composition. RESULTS: The logistic regression model shows that being female (OR = 0.29; P < 0.01), being 65 years old and over (OR = 0.61; P = 0.02), living in a rural area (OR = 0.63; P < 0.01), and living with other people (OR = 0.68; P < 0.01), in particular with children 15 years old or under (OR = 0.55; P < 0.01), are protective factors against tobacco use. Tobacco use declines significantly with increased wealth, as measured by household items, in women but not in men. Completing secondary education is a protective factor in people 15-34 years old (OR = 0.47; P < 0.01) but not in people 35 and over . CONCLUSIONS: There is an association between the sociodemographic variables found in the GATS Costa Rica survey carried out in 2015 and current tobacco use. Interventions at the family and community levels could help consumers give up smoking.

OBJETIVO: Determinar as associações existentes entre as características sociodemográficas e a prevalência do consumo presente de tabaco na Costa Rica, segundo os resultados da Pesquisa Global sobre Tabagismo em Adultos (Global Adult Tobacco Survey - GATS). MÉTODOS: Trata-se de um estudo epidemiológico observacional transversal com representatividade nacional (n = 8.607) com o uso das variáveis sociodemográficas estudadas na GATS realizada em 2015. Usou-se um modelo de regressão logística para predizer a influência das variáveis estudadas no consumo presente de tabaco. A variável dependente foi o consumo presente de tabaco levando em consideração os determinantes sociais disponíveis na pesquisa: gênero, nível de escolaridade, área de residência, idade e composição do domicílio. RESULTADOS: Observou-se, no modelo de regressão logística, que ser do sexo feminino (OR 0,29; P < 0,01), ter 65 anos ou mais (OR 0,61; P = 0,02), residir na zona rural (OR 0,63; P < 0,01) e viver em um domicílio com outras pessoas (OR 0,68; P < 0,01), sobretudo com crianças menores de 15 anos (OR 0,55; P < 0,01), são fatores de proteção contra o consumo de tabaco. O consumo de tabaco diminui de forma significativa com o aumento da renda (medida de acordo com o número de serviços e utilidades domésticas) apenas entre as mulheres. Ter o ensino médio completo é um fator de proteção na faixa etária entre 15 e 34 anos (OR 0,47; P < 0,01), mas não entre as pessoas acima de 35 anos. CONCLUSÕES: Existe uma associação entre as variáveis sociodemográficas estudadas na GATS de 2015 e o consumo presente de tabaco na Costa Rica. Intervenções realizadas ao nível da família e da comunidade poderiam contribuir para a cessação do tabagismo.

Adverse childhood experiences and physiological wear-and-tear in midlife: Findings from the 1958 British birth cohort.

Allostatic load (AL) is a measure of overall physiological wear-and-tear over the life course, which could partially be the consequence of early life exposures. AL could allow a better understanding of the potential biological pathways playing a role in the construction of the social gradient in adult health. To explore the biological embedding hypothesis, we examined whether adverse childhood experiences (ACEs) are associated with elevated AL in midlife. We used imputed data on 3,782 women and 3,753 men of the National Child Development Study in Britain followed up seven times. ACEs were measured using prospective data collected at ages 7, 11, and 16. AL was operationalized using data from the biomedical survey collected at age 44 on 14 parameters representing four biological systems. We examined the role of adult health behaviors, body mass index (BMI), and socioeconomic status as potential mediators using a path analysis. ACEs were associated with higher AL for both men and women after adjustment for early life factors and childhood pathologies. The path analysis showed that the association between ACEs and AL was largely explained by early adult factors at age 23 and 33. For men, the total mediated effect was 59% (for two or more ACEs) via health behaviors, education level, and wealth. For women, the mediated effect represented 76% (for two or more ACEs) via smoking, BMI, education level, and wealth. Our results indicate that early psychosocial stress has an indirect lasting impact on physiological wear-and-tear via health behaviors, BMI, and socioeconomic factors in adulthood.

Disentangling the respective roles of the early environment and parental BMI on BMI change across childhood: A counterfactual analysis using the Millennium Cohort Study.

This study has two objectives. First, to analyse the respective roles of parental BMI and the wider environment on children's BMI across childhood, using a counterfactual analysis. Second, to determine if the correlations between parents and offspring BMI are partly environmental. We used data on 4437 girls and 4337 boys born in 2000-2001 in the UK and included in the Millennium Cohort Study. Children's BMI was measured at ages 3years, 5years, 7years, and 11years. We described the environment using social class and behaviours within the family. At the age of 3, there was no link between the environment and children's BMI. In contrast, there was a clear link between the environment and BMI slopes between 3 and 11years of age. At the age of 11, we calculated that if all children had the most favourable environment, mean BMI would be reduced by 0.91kg/m(2) (95% CI: 0.57-1.26) for boys and by 1.65kg/m(2) (95% CI: 1.28-2.02) for girls. Associations between parents' and offspring BMI remained unchanged after adjustment for environmental variables. Conversely, the link between the environment and children's BMI is partly reduced after adjustment for parental BMI. This confirms that parental BMI is partly a broad proxy of the environment. We highlighted that if every child's environment was at its most favourable, the mean BMI would be significantly reduced. Thus, the recent rise is likely to be reversible.

Health inequalities in the geographic distribution of dental practitioners in Costa Rica: An ecological study.

OBJECTIVE: The uneven distribution of dental health services in a territory can cause an imbalance in accessibility, increasing health inequalities. This study aimed to describe the geographical distribution of dental health practitioners according to urbanicity and area-level socio-economic status in Costa Rica. METHODS: A National Dentist Survey was developed to identify employment status, number of working hours, address and list of the working clinics. Data was completed using information from the national College of Surgeons, including all Costa Rican dentists. The Minimal Geographic Units (MGU) allowed for aggregating the population's individual level socio-economic position. Local Potential Accessibility (LPA) calculated the density of full-time hour's equivalents around each MGU using floating sectors. Clinics were geocoded using Geographic Information Systems, creating 2853 clinical points. Distance between each MGU and the nearest accessible clinics considering full-time working hours equivalents was estimated. MGU were divided into six categories: 'No accessibility', 'Very low accessibility', 'Low accessibility', 'Good accessibility' 'High accessibility' and 'Very high accessibility'. RESULTS: Mean national LPA was 6.5 full-time equivalents per 10 000 inhabitants, 3.4% of the Costa Rican population had no access to dentist; 12.9% had very low accessibility, 22.7% had low accessibility, 35.0% had good accessibility, 16.2% had high accessibility, and 9.8% had very high accessibility. Overall, 39% of the population has a rather low accessibility. LPA was higher in urban districts compared to rural districts and in wealthiest districts compared to most disadvantaged districts. Within districts, after adjustment for district's characteristics, LPA was higher in urban MGU compared to rural MGU and in wealthiest MGU compared to most disadvantaged MGU. CONCLUSIONS: This study found that despite having a high number of dentists, their numbers are small in many areas, increasing inequalities in access to health care. The dentist's free establishment, where they can decide to provide private services within a community, creates zones with very high densities, in particular in the wealthiest urban areas, and others with very low densities, in particular the poorest rural areas. The lack of territorial planning has been one of the reasons that has encouraged an imbalance in the availability of dental human resources. To achieve effective universal health coverage, public institutions should focus their efforts on improving access to dental services in underserved areas.

Social gradient and rural-urban disparities in cancer mortality in Costa Rica.

INTRODUCTION: Data on social inequalities in cancer mortality are sparse, especially in low- and middle-income countries. We aimed to analyze the socioeconomic inequalities in cancer mortality in Costa Rica between 2010 and 2018. METHODS: We linked 9-years of data from the National Electoral Rolls, National Birth Index and National Death Index to classify deaths due to cancer and socioeconomic characteristics of the district of residence, as measured by levels of urbanicity and wealth. We analyzed the fifteen most frequent cancer sites in Costa Rica among the 2.7 million inhabitants aged 20 years and older. We used a parametric survival model based on a Gompertz distribution. RESULTS: Compared to urban areas, mixed and rural area residents had lower mortality from pancreas, lung, breast, prostate, kidney, and bladder cancers, and higher mortality from stomach cancer. Mortality from stomach, lung and cervical cancer was higher, and mortality from colorectal cancer, non-Hodgkin lymphoma and leukemia was lower in the most disadvantaged districts, compared to the wealthiest ones. CONCLUSION: We observed marked disparities in cancer mortality in Costa Rica in particular from infection- and lifestyle- related cancers. There are important opportunities to reduce disparities in cancer mortality by targeting cancer prevention, early detection and opportune treatment, mainly in urban and disadvantaged districts.

Excess mortality from COVID 19 in Costa Rica: a registry based study using Poisson regression.

Background: Official death toll related to COVID-19 has been considerably underestimated in reports from some Latin American countries. This study aimed to analyze the mortality associated with the COVID-19 pandemic in Costa Rica between March 2020 and December 2021. Methods: A registry based study based on 2017-2021 data from the National Institute of Statistics and Census was designed (N = 128,106). Excess deaths were defined by the WHO as "the difference in the total number of deaths in a crisis compared to those expected under normal conditions"; and were estimated using a Poisson regression, and mortality and years of potential life lost (YPLL) rates were calculated. Findings: The COVID-19 pandemic represented 15% of the deaths in Costa Rica between March 2020 and December 2021. The mortality rate related to COVID-19 was 83 per 100,000 person-years. Between March and July 2020 (low-incidence period), observed number of deaths was 9%-lower than expected, whereas it was 15% and 24% higher than expected between July 2020 and March 2021 (high incidence period - no vaccination), and between March 2021 and December 2021 (high incidence period - progressive vaccination) respectively. Between July 2020 and December 2021, excess deaths observed and COVID-19 deaths reported were comparable (7461 and 7620 respectively). Nevertheless, there were more deaths than expected for conditions that predispose to COVID-19 deaths. YPLL and mortality rates increased with age, but significant excess deaths were observed in all age-groups older than 30-39 years. No large differences were noted by districts' socioeconomic characteristics although excess death rate was lower in rural compared to urban areas. Interpretation: Reporting of deaths was only slightly underestimated. In the pre-vaccination period, mortality rate and YPLL rates increased with age, being highest in people aged 60 years or older and justifying the decision to initially prioritize vaccination of older individuals. Funding: The study was supported by the University of Costa Rica and the Agencia Costarricense de Investigaciones Biomédicas - Fundación Inciensa.

Health inequalities in cause-specific mortality in Costa Rica: a population-based cohort study.

OBJECTIVE: To analyze health inequalities in cause-specific mortality in Costa Rica from 2010 to 2018, observing the main causes for inequality in the country. METHODS: The National Electoral Rolls were used to follow-up all Costa Rican adults aged 20 years or older from 2010 to 2018 (n = 2,739,733) in an ecological study. A parametric survival model based on the Gompertz distribution was performed and the event death was classified according to the ICD-10. RESULTS: After adjustment for urbanicity, the poorest districts had a higher mortality than the wealthier districts for most causes of death except neoplasms, mental and behavioral disorders, and diseases of the nervous system. Urban districts showed significantly higher mortality than mixed and rural districts after adjustment for wealth for most causes except mental and behavioral disorders, diseases of the nervous system, and diseases of the respiratory system. Differences according to wealth were more frequent in women than men, whereas differences according to urbanicity were more frequent in men than in women. CONCLUSIONS: The study's findings were consistent, but not fully similar, to the international literature.

Social inequality in incidence and mortality of malignant neoplasms of lip, oral cavity and pharynx: Is Costa Rica an international paradox?

OBJECTIVES: Low socioeconomic position (SEP) has been associated with higher incidences and mortality of lip, oral cavity and pharynx (LOP) cancers in the vast majority of countries with available data. The origins of health inequalities in cancer are socioeconomic, although they vary by time and country. Evidence from Low-and Middle-income Countries (LMICs) remains scarce. This study aims to identify and describe socioeconomic inequalities in LOP cancers incidence and mortality in Costa Rica. The hypothesis tested is that people leaving in low-SEP districts in Costa Rica have greater incidence and mortality rates of lip, oral cavity and pharynx cancers. METHODS: The 10th revision of the International Classification of Diseases (ICD-10) was used to define cancer sites. Data come from a national population-based Cancer Registry with 100% completeness to study incidence. Incidence rate included all new cases of LOP cancer diagnosed from January 1, 2011, and December 31, 2015, for a total of 2 798 517 individuals, 13 832 524 years of follow-up and 601 LOP cases. Mortality rate was extracted from the National Death Index, including 2 739 733 individuals, 23 950 240 person-years of follow-up and 586 LOP cancer deaths, from January 1, 2010, to December 31, 2018. The 2011 Census (with 94% of Costa Rican inhabitants) was used to characterize the urbanicity and wealth of 477 districts. Survival models were performed for both incidence and mortality, allowing to consider existing competitive risks. Cox models were used for incidence, and parametric survival models based on a Gompertz distribution for mortality. RESULTS: The study found that people who lived in the most socioeconomically disadvantaged areas had lower probabilities of developing LOP cancers than people in the richest districts. The same pattern for mortality, however, was not significant. CONCLUSIONS: The hypothesis that incidence and mortality of LOP cancers will show a positive social gradient was not confirmed in this study, contradicting the existing literature. This could be explained by the social distribution of risky health behaviours, more frequent in socially advantaged populations.

Social inequalities in cancer survival: A population-based study using the Costa Rican Cancer Registry.

BACKGROUND: Social inequalities in survival after cancer diagnosis have been described in several high-income countries, all cancer sites combined and for several specific cancer sites. The objective of this study was to analyze 5-year net survival after cancer diagnosis in a middle-income country (Costa Rica), according to the characteristics at the district level. METHODS: Costa Rican Cancer Registry is a national population-based registry. All cases diagnosed between January 1, 2011 and December 31, 2015 were included (N = 46,904). Deaths that occurred before December 31, 2018 were identified. An ecological study was implemented. The 477 districts were described using the 2011 Census. Urbanity and wealth was assessed. Socioeconomic inequalities in cancer survival were measured using multivariable flexible parametric models. Life tables by socio-economic status were used. RESULTS: 5-year net survival ranged from 9% for liver cancer to 98 % for in situ cervical cancer. Patients living in socioeconomically disadvantaged districts experienced poorer cancer survival at 5 years, after taking into account the inequalities in survival in the general population (HR = 1.23, p < 0.01). This result was robust and was found at 1, 2 and 5 years, in all-cancer combined, and in low-, medium- and high-lethality cancers. There was no difference according to the area, except for low-lethality cancers at 1 year. DISCUSSION: Despite its universal and solidarity-based health system, Costa Rica is experiencing social inequalities in survival after cancer diagnosis.

Is tooth loss important when evaluating perceived general health? Findings from a nationally representative study of Costa Rican adults.

OBJECTIVES: Although previous studies have shown that oral diseases can impact certain systemic conditions, dental care has been historically separated from medical healthcare organizations in middle-income countries. There is a lack of research approaches which test the independent relationship between oral health and multidimensional measures of general health. This study analyses the influence of tooth loss on self-rated health (SRH), hypothesizing that, relatively to certain morbidity conditions, tooth loss is a health condition associated with SRH. This study analyses the influence of tooth loss on self-rated health (SRH), hypothesizing that, relative to certain morbidity conditions, tooth loss is a health condition associated with SRH. METHODS: Data were obtained from the Costa Rican Longevity and Healthy Aging Study 1945-1955 Retirement Cohort, a national representative longitudinal survey including residents born between 1945 and 1955. The association between severe tooth loss and SRH was analysed cross-sectionally using the first wave of the study conducted in 2010. A multivariable logistic regression, adjusted for potential confounders, was performed on 2797 participants. A counterfactual analysis was additionally performed to illustrate the theoretical change on SRH prevalence-if all the participants were not to have had severe tooth loss. RESULTS: Severe tooth loss was associated with poor SRH, after adjustment for smoking, morbidity, biomarkers and performance-based physical measures. The counterfactual analysis showed that severe tooth loss was the fifth most important morbidity condition in determining poor SRH. Declaring a poor SRH would have been decreased by 2.0 percentage points if those participants having severe tooth loss had shared the same risk pattern of those who had not lost the majority of their teeth. CONCLUSION: Individuals consider their oral health status to a similar extent as other morbidity conditions when evaluating their general health. A stronger focus on oral health, and its impact on general health, could lead to better planning of national resources, thereby improving accessibility to health care and modifying prevailing conceptions of health care in low- and middle-income countries.

Knowledge, attitudes and practices related to oral health in First-Year university students of the Paraíso campus of the University of Costa Rica / Conocimientos, actitudes y prácticas relacionadas con la salud bucal en estudiantes universitarios de primer año del Recinto de Paraíso de la Universidad de Costa Rica

Abstract People's knowledge, attitudes, and practices related to health are built throughout life, particularly during childhood and adolescence, and they reflect the practices of their family and social circle. The aim of this study was to identify the levels of knowledge, attitudes, and practices related to oral health of first-year university students at the Paraíso Campus of the University of Costa Rica. This was done through a questionnaire of closed questions that would allow oral health educational strategies to be established in the future for this population group. For this purpose, a cross-sectional descriptive study was conducted, where 70 first-year students of the Paraíso Campus participated in the first semester of the year 2019. For data collection, a survey of 22 closed questions on knowledge, attitudes, and practices about oral health was applied, and a score on oral health knowledge was subsequently performed, based on the answers to the questions. According to the results, the level of knowledge shown about oral health is low, since the average knowledge score (7.02 points) was less than half of the maximum score (17 points). The greatest deficiency in knowledge was evidenced in topics, such as, dental biofilm, gingivitis, use of fluorides, and the role of saliva. In addition, several practices that affect the condition of the oral cavity were identified, such as harmful habits, inadequate nutrition, and poor oral hygiene habits. In this study, a general lack of knowledge was identified regarding basic concepts of oral health in young university students, who are not clear about the role of some protective or risk factors related to the main oral diseases.

Resumen Los conocimientos, actitudes y prácticas relacionados a la salud en las personas se construyen a través de la vida, particularmente durante la infancia y la adolescencia y reflejan las prácticas de su círculo familiar y social. El objetivo de este estudio fue identificar los niveles de conocimiento, las actitudes y las prácticas relacionadas a la salud bucodental en estudiantes universitarios de primer ingreso en el Recinto de Paraíso de la Universidad de Costa Rica, mediante un cuestionario de preguntas cerradas que permitirá a futuro establecer estrategias educativas en salud bucal para este grupo de población. Se trató de un estudio descriptivo transversal de tipo observacional en 70 estudiantes de primer ingreso del Recinto de Paraíso en el I semestre del año 2019. Para la recolección de datos se aplicó una encuesta de 22 preguntas cerradas sobre los conocimientos, las actitudes y las prácticas sobre la salud oral. A partir de las preguntas sobre conocimiento en salud bucal se creó un puntaje de conocimiento. Se pudo evidenciar que el nivel de conocimiento sobre la salud bucal es bajo, ya que el promedio del puntaje de conocimiento (7,02 puntos) es menos de la mitad del puntaje máximo (17 puntos). La mayor deficiencia en el conocimiento se evidenció en temas como el biofilm dental, gingivitis, uso de fluoruros y el rol de la saliva. Además, se identificaron varias prácticas que afectan la condición de la cavidad bucal, como los hábitos nocivos, una alimentación inadecuada y hábitos de higiene oral deficiente. En este estudio se identificó en general una falta de conocimiento respecto a conceptos básicos de salud bucal en personas jóvenes universitarias, quienes no tienen claro la función de algunos factores protectores o de riesgo relacionados con las principales enfermedades bucales.

Health inequalities in cause-specific mortality in Costa Rica: a population-based cohort study

ABSTRACT OBJECTIVE To analyze health inequalities in cause-specific mortality in Costa Rica from 2010 to 2018, observing the main causes for inequality in the country. METHODS The National Electoral Rolls were used to follow-up all Costa Rican adults aged 20 years or older from 2010 to 2018 (n = 2,739,733) in an ecological study. A parametric survival model based on the Gompertz distribution was performed and the event death was classified according to the ICD-10. RESULTS After adjustment for urbanicity, the poorest districts had a higher mortality than the wealthier districts for most causes of death except neoplasms, mental and behavioral disorders, and diseases of the nervous system. Urban districts showed significantly higher mortality than mixed and rural districts after adjustment for wealth for most causes except mental and behavioral disorders, diseases of the nervous system, and diseases of the respiratory system. Differences according to wealth were more frequent in women than men, whereas differences according to urbanicity were more frequent in men than in women. CONCLUSIONS The study's findings were consistent, but not fully similar, to the international literature.

Prevalence of tooth loss, bleeding on probing and malocclusion as oral disease indicators in Costa Rican male adolescents: a cross sectional study / Prevalencia de la pérdida de piezas dentales, del sangrado al sondeo y la maloclusión como indicadores de enfermedades orales en adolescentes varones costarricenses: un estudio transversal

The evidence to characterize oral health during adolescence in Costa Rica is limited. This lack of adequate research makes it difficult to develop appropriate health policies for this subgroup of the population. This is particularly important because adolescence is the period during which good health habits must take root in order to foster good physical and cognitive development. This study aims to determine the prevalence of tooth loss, bleeding on probing and malocclusion in Costa Rican male adolescents at the ''Colegio Técnico Profesional San Agustín'' (St. Augustine's Technical High School) located in the province of Cartago. Data was collected from 428 male adolescents aged 12-22 years in a cross-sectional study during 2019. Prevalence of tooth loss was calculated as the number of individuals having lost at least one tooth. The average number of teeth lost by individuals was also recorded. The bleeding on probing was an indicator used as a proxy parameter for monitoring periodontal health where the presence of bleeding on probing and calculus was also recorded. Malocclusion was measured using the Dental Aesthetic Index (DAI). The results showed that the prevalence of tooth loss, bleeding on probing and malocclusion was of 19%, 70.0% and 98%, respectively. It was also found that 81% of the participants had all their teeth, 11% had lost 1 tooth, 8% had lost more than one tooth of which 0.5% had lost more than 5 teeth. Considering a general classification of periodontal problems based on bleeding on probing and presence of calculus, the prevalence of periodontal problems increases to 92%. Regarding the DAI, the category identifying a very severe malocclusion was the most prevalent in the sample (88%). It is alarming the high prevalence of tooth loss, bleeding on probing, and malocclusions in a sample of Costa Rican male adolescents, compared to similar studies in other countries. The overarching conclusion of this study is that oral diseases represent an important health problem that urgently need proper public health action.

La evidencia para caracterizar la salud bucal durante la adolescencia en Costa Rica es limitada. Esta falta de investigación adecuada dificulta el desarrollo de políticas de salud convenientes para este subgrupo de la población. Esto es particularmente importante porque la adolescencia es el período durante el cual se deben arraigar buenos hábitos de salud para fomentar un buen desarrollo físico y cognitivo. Este estudio tiene como objetivo determinar la prevalencia de pérdida de piezas dentales, sangrado al sondeo y maloclusión en adolescentes varones costarricenses del Colegio Técnico Profesional San Agustín ubicado en la provincia de Cartago. Se recopilaron datos de 428 adolescentes varones de 12 a 22 años en un estudio transversal durante 2019. La prevalencia de pérdida de piezas dentales se calculó como el número de individuos que habían perdido al menos una pieza dental. También se registró el número promedio de dientes perdidos por individuos. El sangrado al sondeo fue un indicador utilizado como parámetro para el seguimiento de la salud periodontal donde también se registró la presencia de sangrado al sondeo y cálculo dental. La maloclusión se midió utilizando el Índice Estético Dental (DAI, por sus siglas en inglés). Los resultados mostraron que la prevalencia de pérdida de piezas dentales, sangrado al sondeo y maloclusión fue del 19%, 70,0% y 98%, respectivamente. También se encontró que el 81% de los participantes tenían todos sus dientes, el 11% había perdido 1 pieza dental, el 8% había perdido más de una pieza dental, de los cuales el 0,5% había perdido más de 5 piezas dentales. Considerando una clasificación general de problemas periodontales basada en sangrado al sondeo y presencia de cálculo, la prevalencia de problemas periodontales aumenta al 92%. En cuanto al DAI, la categoría que identifica una maloclusión muy severa fue la más prevalente en la muestra (88%). Es alarmante la alta prevalencia de pérdida de piezas dentales, sangrado al sondeo y maloclusiones en una muestra de adolescentes varones costarricenses, en comparación con estudios similares en otros países. La conclusión general de este estudio es que las enfermedades bucodentales representan un importante problema de salud que necesita urgentemente una acción adecuada de salud pública.

Early socioeconomic conditions and severe tooth loss in middle-aged Costa Ricans.

OBJECTIVE: A wide literature shows a strong social gradient in tooth loss according to income, education and occupation, in both developed and developing countries. It has been shown associations between tooth loss and parental education and occupation, independently of adult conditions. To explore the role of early socioeconomic circumstances on tooth loss, we used a lifecourse model. We analysed the direct and indirect links between early socioeconomic conditions and severe adult tooth loss. METHODS: We used the Costa Rican Longevity and Healthy Aging Study 1945-1955 Retirement Cohort, a nationally representative longitudinal survey of Costa Rican residents born between 1945 and 1955. We used imputed data on 2796 individuals. Principal component analyses were run to integrate measures approaching the material circumstances during childhood and adulthood. We additionally examined the role of adult health behaviours and education level as potential mediators in the multivariable regression. RESULTS: Early socioeconomic conditions were found strongly associated with severe tooth loss; 72.4% of the people who experienced the most deprived socioeconomic conditions during childhood (quartile 1) had severe tooth loss at the time of the interview; vs 43.3% in quartile 4 (most advantaged). This link diminished after adjustment for adult mediators. However, it remained a significant determinant of severe tooth loss in the final model. CONCLUSION: The lifecourse model allowed to highlight that early socioeconomic conditions could have long-term consequences on severe tooth loss in middle ages via both direct and indirect mechanisms.

Identificación de las zonas con dificultades geográficas de acceso a los servicios públicos de salud en Costa Rica: una propuesta metodológica / Identification of areas with geographical access difficulties to public health services in Costa Rica: a methodological proposal

Objetivo: el propósito de este estudio es presentar y aplicar una herramienta metodológica para identificar las zonas en las cuales el acceso a los servicios de salud pudiera resultar difícil para la población debido a la barrera geográfica, tanto por su distancia al centro médico, como por su capacidad de desplazamiento, específicamente en los cantones de Curridabat, Escazú y Desamparados. Métodos: a partir de la división geográfica del país en unidades geoestadísticas mínimas realizada por el Instituto Nacional de Estadísticas y Censos, se calculó, por cada unidad, la distancia en minutos que se tardaría en recorrer caminando, por la ruta real más rápida, desde la unidad geoestadística mínima hasta la sede de su equipo básico de atención en salud asignado. Resultados: el 3,4% de la población estudiada vivía en una unidad geoestadística mínima clasificada como con dificultad importante de acceso a los servicios de salud, pues presentaba tanto la barrera física de la distancia, como poco desplazamiento en automotores y baja condición socioeconómica. Se identificaron 65 unidades geoestadísticas mínimas (sobre 2014 incluidas en el estudio) que se encontraban a más de 20 minutos caminando de la sede de su equipo básico de atención en salud y cuya población contaba con baja capacidad de desplazamiento y baja condición socioeconómica; la mayoría de ellas en el Área de Salud de Desamparados. Conclusión: este estudio presenta una herramienta metodológica para aplicar en la identificación de zonas a cuya población le pudiera resultar difícil el acceso geográfico a los servicios de salud, tanto por su distancia a un centro médico, como por su capacidad de desplazamiento, específicamente en los cantones de Curridabat, Escazú y Desamparados.

Aim: The objective of this study is to present and apply a methodological tool to identify the areas in which the inhabitants could have geographic access difficulties as a barrier to access to health services, both because of its distance from the health center and its mobility capacity, specifically in the cantons of Curridabat, Escazú and Desamparados. Methods: Based on the geographical division of the country into minimum geostatistical units carried out by the Instituto Nacional de Estadísticas y Censos, the distance in minutes that it would take to walk it was calculated for each unit, based on the actual fastest route between the minimum geostatistical unit and the headquarters of its assigned basic health care team. Results: An 3.4% of the studied population lived in a minimum geostatistical unit classified as having significant difficulty accessing health services since they accumulated both the physical barrier of distance and little mobility in automobiles. 65 minimum geostatistical units were identified (out of 2014 included in the study) as being at more than 20 minutes walking from the basic health care team, with a population with low mobility capacity, and consequently low socioeconomic status. Most of these were found in the Desamparados Health Area. Conclusion: This study presents and applies a methodological tool to identify the areas in which the inhabitants could have geographic access difficulties as a barrier to access to health services, both due to their distance from the health center and their mobility capacity, in Curridabat, Escazú and Desamparados.

Diferencias de mortalidad y sus causas: un estudio comparativo entre las zonas indígenas y no indígenas de Costa Rica

Introducción: En la mayoría de los países de los continentes americanos y oceánicos, las personas indígenas tienen peores indicadores de salud que el resto de la población. El objetivo de este estudio es analizar las diferencias de mortalidad y de causas de muerte entre las zonas indígenas y el resto de Costa Rica, en el periodo de 2010 a 2018. Metodología: La población de estudio se conformó a partir del padrón electoral de las elecciones presidenciales de 2010 y las causas de muerte (ICD-10) se extrajeron del registro del Instituto Nacional de Estadísticas y Censos (INEC); fueron incluidas 2 747 616 personas para 23 985 602 personas-año de seguimiento. Resultados: No se observaron diferencias de mortalidad entre los hombres de ambas poblaciones. En cambio, la mortalidad fue ligeramente superior en las mujeres indígenas. En las zonas indígenas, por un lado, la mortalidad fue más alta en quienes tenían menos de 50 años al inicio del seguimiento, en particular, por enfermedades del sistema digestivo y causas externas de morbilidad y mortalidad; por otro, fue inferior en mayores de 70 años y se debió a tumores y enfermedades del sistema circulatorio. Conclusiones: Los resultados obtenidos no confirman la hipótesis de una mortalidad sistemáticamente mayor en las poblaciones que viven en las zonas indígenas.

Introduction: In most countries of the American and Oceanic continents, indigenous people have worse health indicators than the rest of the population. The objective of this study is to analyze the differences in mortality and causes of death between people living in indigenous areas, and people living in the rest of Costa Rica, between 2010 and 2018. Methods: . The study population is based on the 2010 National Electoral Rolls. The Registry of the National Institute of Statistics and Censuses (INEC) allowed knowing the cause of death (ICD-10). 2,747,616 people for 23,985,602 person-years of follow-up were included. Results: No differences in mortality in men were observed between both populations. In women, mortality was slightly higher in indigenous areas. In indigenous areas, mortality was higher in people who were under 50 years of age at the beginning of the follow-up, compared to the rest of the population, in particular mortality due to Diseases of the digestive system and External causes of morbidity and mortality. Mortality was lower in indigenous areas in people over 70 years of age, particularly mortality due to Tumors and Diseases of the circulatory system. Conclusion: The results of this study do not confirm the hypothesis of systematically higher mortality in populations living in indigenous areas.