首页|Tree canopy, pediatric asthma, and social vulnerability: An ecological study in Connecticut
Tree canopy, pediatric asthma, and social vulnerability: An ecological study in Connecticut
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NSTL
Despite a variety of health benefits associated with trees, previous findings on links between tree canopy and asthma have been mixed. Little is known about the association of tree canopy with asthma emergency department (ED) visits and hospitalizations at the neighborhood level. This study examines associations between tree canopy and pediatric asthma ED visit/hospitalization rates among the Connecticut population at the census tract level and investigates the moderating effect of social vulnerability on these associations. Using data of the combined pediatric asthma ED visits and hospitalizations (from 2010 to 2014), tree canopy coverage, and area based social vulnerability, we applied multivariate negative binomial regression models, controlling for confounders including ozone and road density. Results show that every 10-percentage point increase in tree canopy cover was expected to bring a 4% decrease in asthma ED visit/hospitalization rates. Further, every 10-percentage point increase in social vulnerability index was associated with an 18% increase in asthma ED visit/hospitalization rates. We also found a nonlinear association, indicating a U-shape effect of tree canopy on pediatric asthma ED visit/hospitalization rates. The levels of social vulnerability moderated the association between the nonlinear effect of tree canopy and asthma ED visit/hospitalization rates (beta =-5.629, p =.004). Findings suggests that tree canopy may help reduce pediatric asthma ED visits and hospitalizations. Particularly, the benefits of tree canopy in decreasing pediatric asthma ED visits and hospitalizations would be more effective in more socially vulnerable areas.
Tree canopyPediatric asthmaEmergency department visithospitalizationSocial vulnerabilityConnecticutAIR-POLLUTIONCHILDHOOD ASTHMAURBAN VEGETATIONSPATIAL-ANALYSISGREEN SPACESHEALTHEXPOSURECHILDRENDISPARITIESQUALITY
Newman, Galen、Lee, Sungmin、Baek, Juha、Kim, Se Woong
NSTL
