Aggravated Risks of Emergency Hospitalizations Associated with Temperature amid Elevated Ambient Air Pollution: Evidence from a 20-Year Time-Series Study in Hong Kong.

ABSTRACT: The combined impact of nonoptimal temperatures and air pollution on hospitalizations remains understudied. This study investigated how major criterion air pollutants (PM_2.5, NO₂, and O₃) modified the short-term temperature-hospitalization associations and quantified the excess attributable burden. Daily time-series data of emergency hospitalizations and environmental exposures (2000-19) in Hong Kong were analyzed using two comparative models with product terms (1) between temperature and lower and higher strata for pollutants, and (2) between temperature and the count of elevated pollutants. Over 10 million noncancer nonexternal (NCNE) admissions occurred, including ∼14% circulatory and ∼20% respiratory admissions. PM_2.5 consistently amplified te

SUBMITTER: Guo YT 

PROVIDER: S-EPMC12750533 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature