Table 2.
Hazard ratios based on body mass index and adjusted for potential confounders in men.
| Body mass index, kg/m2 |
||||
|---|---|---|---|---|
| ≤18.5 | 18.6–21.9 | 22.0–24.9 | ≥25.0 | |
| Person-years | 1820 | 16,092 | 18,613 | 10,676 |
| All-stroke | ||||
| Number of cases | 15 | 76 | 71 | 45 |
| Incidence ratea | 824 | 472 | 381 | 421 |
| HR1 (95% CI) | 1.52 (0.87–2.66) | 1.16 (0.84–1.61) | 1.00 | 1.31 (0.90–1.90) |
| HR2 (95% CI) | 2.11 (1.17–3.82) | 1.35 (0.95–1.91) | 1.00 | 0.97 (0.64–1.48) |
| Cerebral infarction | ||||
| Number of cases | 11 | 54 | 49 | 35 |
| Incidence ratea | 604 | 336 | 263 | 327 |
| HR1 (95% CI) | 1.59 (0.82–3.07) | 1.19 (0.81–1.76) | 1.00 | 1.51 (0.98–2.32) |
| HR2 (95% CI) | 2.15 (1.07–4.33) | 1.42 (0.94–2.15) | 1.00 | 1.13 (0.69–1.83) |
| Cerebral hemorrhage | ||||
| Number of cases | 4 | 17 | 18 | 6 |
| Incidence ratea | 220 | 106 | 97 | 56 |
| HR1 (95% CI) | 1.70 (0.57–5.07) | 1.04 (0.54–2.02) | 1.00 | 0.66 (0.26–1.65) |
| HR2 (95% CI) | 2.78 (0.86–9.01) | 1.11 (0.53–2.33) | 1.00 | 0.43 (0.14–1.31) |
CI, confidence interval; HR, hazard ratio.
HR1: Hazard ratios adjusted for age.
HR2: Hazard ratios adjusted for age, systolic blood pressure, total cholesterol, high-density lipoprotein cholesterol, triglycerides, diabetes mellitus, smoking, and alcohol consumption.
a
Per 100,000 person-years.