(b)
| Smoking | <40 yrs | >40 yrs | Results | ||
|---|---|---|---|---|---|
| N | % | N | % | ||
| Yes | 5 | 38.5 | 14 | 77.7 | |
| No | 2 | 11.8 | 4 | 33.3 | |
|
| |||||
| Total | 7 | 23.3 | 16 | 53.3 | OR = 6.07; P = 003 |
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