Fig. 4From: Associations between short-term exposure to gaseous pollutants and pulmonary heart disease-related mortality among elderly people in Chengdu, ChinaAssociation between PHD-related mortality among elderly people and IQR increases for SO2, NO2, and O3 between females and males, or between different marital statuses a. Between females and males. b. Between different marital statusesBack to article page