Table 2.
All-Cause Mortality: Hazard Ratios by Smoking Status Adjusted for Age, Race, Sex, and Antipsychotic treatment
| Variable | Hazard Ratio (95% Confidence Interval) | Statistics |
|
| χ2 (df = 1) | P | ||
| Male | 1.42 (1.08–1.88) | 6.30 | .012 |
| Age: 19–34 y | 0.47 (0.24–0.94) | 4.58 | .032 |
| Age: ≥55 y | 6.81 (4.34–10.66) | 70.12 | <.001 |
| Black | 0.57 (0.43–0.76) | 14.19 | .0002 |
| Clozapine treatment | 0.77 (0.58–1.01) | 3.49 | .062 |
| Smoking (age: 19–34 y) | 1.24 (0.57–2.70) | 0.291 | .590 |
| Smoking (age: 35–54 y) | 2.06 (1.37–3.10) | 11.87 | .0006 |
| Smoking (age: 55–69 y) | 0.654 (0.42–0.99) | 3.95 | .047 |
Note: Tests for differences by age in excess risk due to smoking: age of 19–34 y vs age of 35–54 y (χ2 = 1.278, df = 1, P = .258); age of 35–54 y vs age of 55–69 y (χ2 = 14.57, df = 1, P = .0001).