Emergency Department Visits in Children Associated with Exposure to Ambient PM₁ within Several Hours.

ABSTRACT:

Background

Emerging evidence has integrated short-term exposure to PM₁ with children's morbidity and mortality. Nevertheless, most available studies have been conducted on a daily scale, ignoring the exposure variations over the span of a day.

Objective

The main intention of this study was to examine the association between pediatric emergency department visits (PEDVs) and intra-day exposures to PM₁ and PM_2.5. We also aimed to investigate whether a high PM₁/PM_2.5 ratio elevated the risk of PEDVs independent from PM_2.5 exposure within several hours.

Methods

We collected hourly data on aerial PM₁ and PM_2.5 concentrations, all-cause PEDVs, and meteorological factors from two megacitie

SUBMITTER: Li Y 

PROVIDER: S-EPMC10049417 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature