Can economic deprivation protect health? Paradoxical multilevel effects of poverty on Hispanic children's wheezing

Neighborhood Material Deprivation Is Associated with Childhood Asthma Development: Analysis of Prospective Administrative Data

Rationale

Material deprivation has been proposed as a more comprehensive measure of socioeconomic status than parental income. Stronger associations between childhood emergency department visits for asthma and air pollution have been demonstrated among children living in neighborhoods with high levels of deprivation, but the associations with asthma development and ongoing asthma are not known.

Objectives

We determined the associations between neighborhood material deprivation and the development of new and ongoing childhood asthma.

Methods

Prospectively collected administrative data housed at the Institute for Clinical Evaluative Sciences were examined for Toronto children born from 1997 to 2003. Neighborhood material deprivation, comprising no high school graduation, lone parent families, government transfers, unemployment, low income, and homes needing major repairs, was reported in the Ontario Marginalization Index. Incident asthma was defined by the time of entry into the Ontario Asthma Surveillance Information System (OASIS) database. We measured the risk of incident asthma using Cox proportional hazards models and the associations between ongoing asthma visits and deprivation by year of life with generalized linear mixed models.

Results

OASIS asthma criteria were met for 21% of the 326,383 children. After adjustment for characteristics strongly associated with asthma, including male sex, prematurity, obesity, and atopic conditions other than asthma, children with high birth neighborhood deprivation were at increased risk of incident asthma (HR 1.11; 95% CI, 1.09–1.13). High deprivation in a given year of life was associated with increased odds of ongoing asthma during that year of life (OR 1.03; 95% CI, 1.02–1.05).

Conclusions

Children living in high-deprivation neighborhoods are at increased risk of incident and ongoing asthma. This study suggests that neighborhood material deprivation may represent a helpful tool for evaluating the effects of disparities in health and social advantages on the likelihood of developing and continuing to need healthcare visits for ongoing childhood asthma.

An Examination of the Association of Multiple Acculturation Measures with Asthma Status Among Elementary School Students in El Paso, Texas

Some researchers posit that the lower prevalence of asthma among those of Mexican descent may result from an under-diagnosis and recommend a critical appraisal of factors related to race/ethnicity, like acculturation, and its influence on asthma status. Survey data were analyzed using multinomial logistic regression to examine the association of child's asthma status (no wheezing/no asthma symptoms, possible undiagnosed and diagnosed asthma) with measures of acculturation among Hispanic students (n = 1095). In this population, the prevalence of diagnosed asthma (15%) was higher than both national (7.6%) and state (6.8%) averages for Hispanic children in 2012. While bivariate analyses showed significant associations for asthma status and measures of acculturation, multivariate analyses did not. There is an underestimated burden of illness among Hispanic children in El Paso County. More research on the suitability of acculturation constructs is needed to delineate what they actually measure and how acculturation influences asthma status.

Country of Birth and Variations in Asthma and Wheezing Prevalence, and Emergency Department Utilization in Children: A NHANES Study

Asthma prevalence and asthma-related healthcare utilization differ across racial/ethnic groups and geographical areas. This study builds on previous research to examine the relationship between country of birth and asthma prevalence and healthcare utilization using a national data set. The National Health and Nutrition Examination Survey (NHANES) Demographic and Questionnaire Files from 2007 to 2012 were used for this study. We used SPSS complex sampling design to estimate the association between country of birth and asthma prevalence, wheezing and emergency department (ED) use. The sample size was 8272 children and adolescents between the ages of 5 and 19 years old. US-born children had more reported episodes of wheezing (p = 0.024) 95 % CI 1.06; 2.54. There was no association between country of birth and asthma and ED use. US-born children and adolescents compared to foreign-born children and adolescents are more likely to have episodes of wheezing.