Publication date: Jul 17, 2026
Thailand has recorded daily PM up to 414 ug/m^3 , nationwide, and region-specific evidence on short-term associations with cardiorespiratory mortality remains limited under tropical climate extremes, diverse climate regions, or below standard levels. Prior studies emphasized temperate settings. This nationwide tropical study assessed region-specific risks and effect modifiers. We analyzed 4. 3 million hourly pollutant and meteorological data (2014-2022) from 87 stations, aggregated to daily exposures for 6584 sub-districts. Cardiovascular (259,463) and respiratory (153,170) deaths were examined using a time-stratified case-crossover with logistic regression to estimate adjusted odds ratios (AORs: 95% CIs) per 10 ug/m^3 PM. PM correlated with O in the north and with NO in Bangkok, p
| Concepts | Keywords |
|---|---|
| Cardiovascular | |
| Case-crossover | |
| Effect modification | |
| PM(2.5) | |
| Respiratory | |
| Tropical climate |