Table 4 Hazard Ratio of all-cause mortality or premature death among different pack-years of smoking groups, as compared with non-smokers in total and subgroup analysis 1
From: Tobacco smoke and all-cause mortality and premature death in China: a cohort study
Overall | Men | Women | |
|---|---|---|---|
All-cause mortality | |||
0 | 1.00 | 1.00 | 1.00 |
< 15 | 0.93 (0.58, 1.49) | 0.95 (0.57, 1.60) | 0.66 (0.21, 2.06) |
15–30 | 1.05 (0.66, 1.65) | 0.98 (0.60, 1.61) | 0.92 (0.23, 3.73) |
≥ 30 | 1.27 (0.92, 1.75) | 1.12 (0.79, 1.58) | 2.22 (0.90, 5.46) |
P for trend 2 | 0.349 | 0.245 | 0.037 |
Premature death | |||
0 | 1.00 | 1.00 | 1.00 |
< 15 | 1.22 (0.68, 2.17) | 1.30 (0.69, 2.44) | 0.43 (0.06, 3.08) |
15–30 | 1.34 (0.76, 2.36) | 1.26 (0.69, 2.30) | 0.98 (0.14, 7.06) |
≥ 30 | 1.59 (1.03, 2.43) | 1.41 (0.89, 2.24) | 3.38 (1.22, 9.38) |
P for trend 2 | 0.002 | 0.185 | 0.010 |