Neonatal screening tests in Brazil: prevalence rates and regional and socioeconomic inequalities

OBJECTIVE

To identify the prevalence and associated factors with the performance of the Guthrie test, hearing, and red reflex screening tests in Brazil.

METHODS

This was a population-based, cross-sectional study that analyzed data on 5,231 children under 2 years of age participating in the National Health Survey of 2013. The study described the prevalence and Confidence Intervals (95% CI) of the three neonatal screening tests performed, in any period, and their association with the country's regions, skin color/ethnicity, private health insurance, and per capita household income. Logistic regression models were used, and odds ratios were calculated by incorporating sample weights.

RESULTS

The prevalence of Guthrie test screening in Brazil at any time of life was 96.5%, that of the newborn hearing screening was 65.8% and that of the red reflex screening test was 60.4%. The performance of the three screening tests was significantly higher among children whose mothers/guardians reported higher per capita household income, who lived in the South and Southeast regions, and who had private health insurance (p<0.001). There was no statistically significant difference regarding the performance of the tests according to skin color/ethnicity (p>0.05). The same inequalities were verified when the tests were performed during the recommended periods, with a strong socioeconomic gradient.

CONCLUSIONS

There are inequalities in the performance of neonatal screening tests in the country, and also in the performance of these tests during the periods established in the governmental guidelines. The guarantee of the performance of these tests in a universal and public health system, as in Brazil, should promote equity and access to the entire population.

Socioeconomic factors and mortality due to cerebrovascular and hypertensive disease in Brazil

INTRODUCTION AND OBJECTIVE

Socioeconomic factors may affect mortality due to cerebrovascular diseases (CBVDs), hypertensive diseases (HYPDs), and circulatory system diseases (CSDs). This study aimed to assess the association between the Human Development Index (HDI) and the extent of supplementary health coverage and mortality due to these diseases in the Brazilian Federative Units (FUs) between 2004 and 2013.

METHODS

The Municipal HDI (MHDI) scores of each FU for 2000 and 2010 were retrieved from the Atlas Brasil website, and supplementary health coverage data for the period 2004-2013 were obtained from the national regulatory agency for private health insurance. Population and mortality data were obtained from the website of the Department of Information Technology of the Unified Health System (DATASUS). Mortality rates were weighted by ill-defined causes of death and standardized by age.

RESULTS

The MHDI increased between 2000 and 2010 in all FUs, in half of which it was 0.7 or higher. Supplementary health coverage increased in the country during the study period and was inversely associated with mortality due to CSDs and CBVDs between 2004 and 2013. Mortality due to CBVDs and HYPD in 2013 showed an inverse linear association with the MHDI in 2000.

CONCLUSION

Mortality due to CSDs, CBVDs, and HYPDs was influenced by socioeconomic factors. There was a significant inverse association between socioeconomic factors and mortality due to CSDs, CBVDs, and HYPDs. Plans to reduce mortality due to these diseases should include measures to foster economic development and reduce inequality.

Influence of socioeconomic and psychological factors in glycemic control in young children with type 1 diabetes mellitus

OBJECTIVE

To evaluate the influence of socioeconomic and psychological factors on glycemic control in young children with type 1 diabetes mellitus.

METHODS

This was a cross-sectional study assessing prepubertal children with type 1 diabetes mellitus. The authors analyzed the socioeconomic status using the Brazil Economic Classification Criterion (Critério de Classificação Econômica Brasil [CCEB]) and psychological conditions through the Brazilian version of the Problem Areas in Diabetes, associated with glycemic control, measured by glycated hemoglobin (HbA1c). Descriptive analysis was used. The variables were assessed by bivariate and multivariate robust Poisson regression model, as well as Fisher's exact and Pearson's chi-squared tests to obtain the ratios of gross and adjusted prevalence ratio, with confidence interval being estimated at 95%.

RESULTS

A total of 68 children with type 1 diabetes mellitus were included in the study. A negative association between glycemic control (glycated hemoglobin levels), socioeconomic status (Brazil Economic Classification Criterion), and psychological condition (Brazilian version of the Problem Areas in Diabetes) was observed. Among the study participants, 73.5% (n=50) of the children had an unfavorable socioeconomic status; these participants were 1.4 times more likely to present altered glycated hemoglobin values. In relation to individuals with compromised psychological status, 26 (38.2%) had a score above 70, thus being classified with psychological stress; these children were 1.68 times more likely (95% confidence interval: 1.101, 1.301) to have higher glycated hemoglobin levels.

CONCLUSIONS

The socioeconomic conditions and psychological characteristics of the study participants were negatively associated with glycated hemoglobin results. These data reinforce the importance of the studied variables as predictors of glycemic control.

Socioeconomic inequality in preterm birth in four Brazilian birth cohort studies

OBJECTIVE

To analyze economic inequality (absolute and relative) due to family income in relation to the occurrence of preterm births in Southern Brazil.

METHODS

Four birth cohort studies were conducted in the years 1982, 1993, 2004, and 2011. The main exposure was monthly family income and the primary outcome was preterm birth. The inequalities were calculated using the slope index of inequality and the relative index of inequality, adjusted for maternal skin color, education, age, and marital status.

RESULTS

The prevalence of preterm births increased from 5.8% to approximately 14% (p-trend<0.001). Late preterm births comprised the highest proportion among the preterm births in all studies, although their rates decreased over the years. The analysis on the slope index of inequality demonstrated that income inequality arose in the 1993, 2004, and 2011 studies. After adjustment, only the 2004 study maintained the difference between the poorest and the richest subjects, which was 6.3 percentage points. The relative index of inequality showed that, in all studies, the poorest mothers were more likely to have preterm newborns than the richest. After adjustment for confounding factors, it was observed that the poorest mothers only had a greater chance of this outcome in 2004.

CONCLUSION

In a final model, economic inequalities resulting from income were found in relation to preterm births only in 2004, although a higher prevalence of prematurity continued to be observed in the poorest population, in all the studies.

Association between maternal socioeconomic factors and nutritional outcomes in children under 5 years of age

OBJECTIVE

To estimate the association between maternal socioeconomic factors and the occurrence of nutritional outcomes in children under five years of age in a representative sample of the Brazilian population.

METHODS

This was a cross-sectional study that evaluated data from the latest National Survey of Children and Women's Demographics and Health, carried out in Brazil in 2006-2007. Maternal employment and maternal level of schooling were the main exposures. The following nutritional outcomes in children were considered: height/age <-2 standard deviations (SD) for short stature and BMI/age >2SD for overweight. Generalized estimating equations (GEE) were utilized as the regression method.

RESULTS

After adjustments, it was observed that children whose mothers had low level of schooling had a higher chance of having short stature (OR=3.97, 95% CI, 1.23-12.80) and children whose mothers worked outside the home were more likely to have excess weight (OR=1.57, 95% CI, 1.02-2.42). Maternal employment was not associated with short stature in children (OR=1.09, 95% CI, 0.67-1.77).

CONCLUSION

Maternal level of schooling was associated with short stature in children and maternal employment with overweight, indicating the need to take into account the socioeconomic factors when proposing programs and strategies aimed at health and nutrition improvement of children, considering inter-sectoral interventions.