Table 2 COPD patients estimate smoking habits of their parents.
From: Maternal smoking promotes chronic obstructive lung disease in the offspring as adults
Parameter | Father | Mother |
|---|---|---|
Smoker/non-smoker (%) | 75.0/25.0 | 15.4/84.6 |
Cumulative cigarette exposure | ||
(% positive answers) | ||
< 10 py | 5.7 | 32.5 |
10-20 py | 23.7 | 55.0 |
> 20 py | 70.6 | 12.5 |