Table 2.
Adjusted HRs for PC by smoking status in male participants
| No. events | Rate per 100,000 | HR (95% CI)a | |
|---|---|---|---|
| Smoking category | |||
| Never smokers | 43 | 142.5 | 1.00 (0.73, 1.36) |
| Occasional smokers | 29 | 123.2 | 1.16 (0.80, 1.67) |
| Former regular smokers | 32 | 228.4 | 1.17 (0.82, 1.65) |
| Current regular smokersb | 236 | 166.7 | 1.25 (1.08, 1.44) |
| Cigarette equivalents/dayc | |||
| Never smokers | 43 | 142.5 | 1.00 (0.73, 1.38) |
| <20 | 109 | 157.2 | 1.19 (0.98, 1.44) |
| 20–24 | 85 | 149.0 | 1.25 (1.01, 1.56) |
| ≥25 | 42 | 143.8 | 1.28 (0.93, 1.74) |
| P for trend | 0.28 | ||
| Age of starting, yearsc | |||
| Never smokers | 43 | 142.5 | 1.00 (0.73, 1.38) |
| ≥25 | 89 | 200.4 | 1.27 (1.03, 1.58) |
| 20–24 | 82 | 140.9 | 1.18 (0.95, 1.47) |
| <20 | 65 | 122.7 | 1.20 (0.93, 1.54) |
| P for trend | 0.30 | ||
a
Models were stratified by age‐at‐risk and area, and adjusted for age at baseline, education, alcohol, BMI, and total physical activity.
b
Regular smokers included former smokers who had stopped because of illness. Compared with never smokers, the adjusted HR was 1.28 (0.90–1.81) and 1.10 (0.75–1.62) for former smokers who had stopped due to illness and other reasons.
c
Among current regular smokers.