Table 2 Hazard ratios (HR) by smoking status on total cohort, and on sub-cohort with self-reported TB history for TB mortality
From: The reduction of tuberculosis risks by smoking cessation
Total cohort (486,341) | Sub-cohort who responded to TB history question | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
self reported TB history (-) 414,460 | Self reported TB history (+) 5,036 | Self reported TB history (-) 414,460 | Self reported TB history (+) 5,036 | |||||||||||
N | HR†| (95%C.I.) | HR‡ | (95%C.I.) | N | HR§ | N | HR§ | (95%C.I.) | HR|| | (95%C.I.) | HR|| | (95%C.I.) | |
Hazard ratio- TB deaths | TB deaths (77) | 64 | 1 | 13 | 5.90* | (3.1~11.2) | ||||||||
   Never smoker** | 8 | 1 | - | 1 | - | 3 | - | 5 | 4.75* | (1.9~12.0) | 1 | - | 29.47* | (6.9~125.2) |
   Current smoker** | 21 | 4.19* | (1.8~9.7) | 3.37* | (1.4~8.1) | 17 | - | 4 | 10.10* | (3.3~30.8) | 8.56* | (2.5~29.8) | 44.02* | (9.6~201.6) |
   Ex-smoker** | 6 | 1.90 | (0.6~5.6) | 2.02 | (0.7~6.0) | 3 | - | 3 | 5.51* | (1.6~18.4) | 3.03 | (0.6~15.3) | 29.25* | (5.7~149.0) |
   Ever smoker** | 27 | 3.97* | (1.9~8.4) | 2.62* | (1.2~5.9) | |||||||||
   Current smoker** | ||||||||||||||
<half a pack/day | 10 | 5.35* | (2.0~14.1) | 3.70* | (1.4~10.0) | |||||||||
≧half a pack/day | 11 | 2.88* | (1.1~7.5) | 1.84 | (0.7~5.0) | |||||||||
<10 years of smoking | 1 | 3.01 | (0.4~25.0) | 2.38 | (0.3~20.1) | |||||||||
≧10 years of smoking | 20 | 3.74* | (1.6~8.9) | 2.44 | (1.0~6.0) | |||||||||
<15 pack-year | 4 | 3.51* | (1.0~12.1) | 2.54 | (0.7~8.9) | |||||||||
≧15 pack-year | 17 | 3.83* | (1.6~9.3) | 2.46 | (1.0~6.2) | |||||||||