Characteristics of cases and controls, and age-district adjusted odds ratios for potential myocardial infarction risk factors
| Cases (448) | Controls (1777) | Age-district adjusted | ||||
|---|---|---|---|---|---|---|
| Risk factors | n | % | n | % | OR | 95% CI |
| OR, odds ratio; 95% CI, 95% confidence interval. | ||||||
| Marital status | ||||||
| Married | 394 | 87.9 | 1490 | 83.8 | ||
| Single | 54 | 12.1 | 287 | 16.2 | 0.73 | 0.54 to 1.00 |
| Education | ||||||
| University | 132 | 29.5 | 428 | 24.1 | ||
| Secondary | 217 | 48.4 | 1003 | 56.4 | 0.71 | 0.56 to 0.91 |
| 8 years | 99 | 22.1 | 346 | 19.5 | 0.89 | 0.66 to 1.21 |
| Employment duration (years) | ||||||
| 3–4 | 15 | 3.4 | 91 | 5.1 | ||
| 5–9 | 21 | 4.7 | 175 | 9.9 | 0.73 | 0.36 to 1.48 |
| 10–14 | 35 | 7.8 | 241 | 13.6 | 0.87 | 0.45 to 1.66 |
| 15–19 | 52 | 11.6 | 230 | 12.9 | 1.33 | 0.71 to 2.48 |
| ≥20 | 325 | 72.5 | 1040 | 58.5 | 1.84 | 1.05 to 3.24 |
| Smoking | ||||||
| Non-smoker | 107 | 23.9 | 609 | 34.3 | ||
| Current smoker | 245 | 54.7 | 908 | 51.1 | 1.61 | 1.25 to 2.07 |
| Former smoker | 96 | 21.4 | 260 | 14.6 | 2.08 | 1.52 to 2.85 |
| Blood pressure | ||||||
| <140/90 mm Hg | 246 | 54.9 | 1400 | 78.8 | ||
| ≥140/90 mm Hg | 202 | 45.1 | 377 | 21.2 | 3.01 | 2.41 to 3.75 |
| Body mass index | ||||||
| Normal (20.1–25.0 kg/m2) | 221 | 49.3 | 928 | 52.2 | ||
| Increased (25.1–30.0 kg/m2) | 130 | 29.0 | 555 | 31.2 | 0.96 | 0.76 to 1.23 |
| Obesity (>30.0 kg/m2) | 97 | 21.7 | 294 | 16.6 | 1.36 | 1.04 to 1.79 |
| Psychological status | ||||||
| No stress | 294 | 65.6 | 1550 | 87.2 | ||
| Stress | 154 | 34.4 | 227 | 12.8 | 3.63 | 2.85 to 4.62 |
| Sexual disorders | ||||||
| No | 324 | 72.3 | 1458 | 82.0 | ||
| Yes | 124 | 27.7 | 319 | 18.0 | 1.71 | 1.34 to 2.18 |