Table 5 Odds Ratios (ORs) of lung cancer associated with ETS from all sources combined
All subjects | Self-respondents only | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Controls | Cases | Controls | Cases | ||||||||
Index | N=436 | N=44 | OR* | 95%CI | N=410 | N=32 | OR* | 95%CI | |||
Duration (in hrs/d x yrs) | |||||||||||
<=100 | 173 | 18 | 1 | (ref.) | 163 | 11 | 1 | (ref.) | |||
101-190 | 103 | 13 | 1.19 | 0.55 | 2.60 | 94 | 11 | 1.74 | 0.73 | 4.19 | |
>190 | 160 | 13 | 0.86 | 0.40 | 1.85 | 153 | 10 | 0.97 | 0.40 | 2.36 | |
Cumulative exposure (in pack-years) | |||||||||||
<=2.5 | 176 | 18 | 1 | (ref.) | 163 | 11 | 1 | (ref.) | |||
2.5-6 | 101 | 12 | 1.37 | 0.61 | 3.06 | 96 | 11 | 1.68 | 0.70 | 4.04 | |
>6 | 159 | 14 | 0.96 | 0.45 | 2.04 | 151 | 10 | 0.98 | 0.40 | 2.38 | |