Demographic characteristics of patients who were admitted to hospital for myocardial infarction in Calgary (2004–2012)
| Characteristic | No. (%) of patients n = 6142 |
|---|---|
| Sex | |
| Male | 4482 (72.9) |
| Female | 1660 (27.0) |
| Age, yr | |
| ≤ 65 | 3209 (52.2) |
| > 65 | 2933 (47.7) |
| Diabetes | |
| No diabetes | 4649 (75.6) |
| Diabetes | 1493 (24.3) |
| Cigarette smoking | |
| Never smoker | 2496 (40.6) |
| Former smoker | 1798 (29.2) |
| Current smoker | 1848 (30.0) |
| Residential location* | |
| Low NO2 air pollution (1st tertile) | 1660 (27.0) |
| Medium NO2 air pollution (2nd tertile) | 3088 (50.2) |
| High NO2 air pollution (3rd tertile) | 1384 (22.5) |
Note: NO2 = nitrogen dioxide.
↵* 10 patients with missing data.