Joint effects of temperature and relative humidity on COPD hospital admissions in England, 2003-2021: A nationwide case crossover study
Background: Heat exposure has been linked to chronic obstructive pulmonary disease (COPD) outcomes, but evidence on relative humidity and humidity-temperature interaction remains limited and inconsistent. Methods: We conducted a nationwide time-stratified case-crossover study of 473,494 COPD hospital admissions in Engl...