Impact of black carbon exposure on length of hospital stay in asthma patients: a retrospective cohort study in yulin, China.

ABSTRACT:

Objective

BACKGROUND: While PM₂.₅ exposure is linked to asthma exacerbations, components-specific effects on healthcare burden remain understudied. Hospital length of stay (LOS), a critical indicator of disease severity and healthcare costs, has received limited attention in black carbon (BC) research.

Objective

To quantify the association between short-term exposure to PM₂.₅ components-particularly black carbon (BC)-and LOS among asthma patients, and to identify vulnerable populations and critical exposure windows.

Methods

We conducted a retrospective cohort study of 4,509 asthma patients (ICD-10: J45 ~ J46) hospitalized in Yulin, China (2018 ~ 2023). Daily PM_2.5 components concentrations (BC, Organic Matter, Sulfates, Nitrates, Ammonium) were derived from

SUBMITTER: Chen Y 

PROVIDER: S-EPMC12363111 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature