Figure 5. Risk of cardiovascular mortality associated with an increase of 10 µg/m3 in 1‐year mean fine particulate matter <2.5 µm in diameter exposure among adults with a history of acute myocardial infarction (AMI) and/or stroke, overall and by subgroup.
*P values are given for interaction. †Education P value: interaction effect as a trend. CVD indicates cardiovascular disease; Q, quartile; and SES, socioeconomic status.