Table 4 Odds Ratios (ORs) of lung cancer associated with ETS from outside homes (vehicle, public places, work)
All subjects | Self-respondents only | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Controls | Cases | Controls | Cases | ||||||||
Categories | N=436 | N=44 | OR* | 95%CI | N=410 | N=32 | OR* | 95%CI | |||
Never | 175 | 16 | 1 | (ref.) | 160 | 8 | 1 | (ref.) | |||
Ever | 261 | 28 | 1.51 | 0.75 | 3.05 | 250 | 24 | 1.95 | 0.84 | 4.54 | |
Duration | |||||||||||
<= 64 (hrs/d x yrs) | 146 | 16 | 1.47 | 0.68 | 3.19 | 141 | 12 | 1.74 | 0.69 | 4.42 | |
>64 (hrs/d x yrs) | 115 | 12 | 1.57 | 0.65 | 3.81 | 109 | 12 | 2.30 | 0.85 | 6.19 | |
Duration | |||||||||||
<=1 pack-year | 124 | 16 | 1.70 | 0.78 | 3.69 | 119 | 12 | 2.05 | 0.81 | 5.22 | |
>1 pack-year | 137 | 12 | 1.28 | 0.54 | 3.03 | 131 | 12 | 1.84 | 0.70 | 4.85 | |