Remarks on Ambient Air Pollution and Health Outcomes

Figure 1

ED visits for ischemic heart disease (IHD). (a) Odds ratios (OR, 95% CI) by age groups and (b) levels of SO₂ by age group for cases and controls. (c) Levels of SO₂ by age group for cases—shown by sex. The results are shown for the sequence of age groups: [20,39],[21,40],…,[66,85].

(a)

(b)

(c)