New Homogeneous Spatial Areas Identified Using Case-Crossover Spatial Lag Grid Differences between Aerosol Optical Depth-PM_2.5 and Respiratory-Cardiovascular Emergency Department Visits and Hospitalizations.

ABSTRACT: Optimal use of Hierarchical Bayesian Model (HBM)-assembled aerosol optical depth (AOD)-PM_2.5 fused surfaces in epidemiologic studies requires homogeneous temporal and spatial fused surfaces. No analytical method is available to evaluate spatial heterogeneity. The temporal case-crossover design was modified to assess the spatial association between four experimental AOD-PM_2.5 fused surfaces and four respiratory-cardiovascular hospital events in 12 km² grids. The maximum number of adjacent lag grids with significant odds ratios (ORs) identified homogeneous spatial areas (HOSAs). The largest HOSA included five grids (lag grids 04; 720 km²) and the smallest HOSA contained two grids (lag grids 01; 288 km²). Emergency department asthma and i

SUBMITTER: Braggio JT 

PROVIDER: S-EPMC9393882 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature