Table 4 Parental smoking habit and cotinine levels in cord blood higher 14 ng/mL
Parental smoking habit | Cord blood cotinine levels > 14ng/mL | |||||
|---|---|---|---|---|---|---|
1996 98 | 2002 04 | 2008 | ||||
N = 373 | N = 245 | N = 181 | ||||
n | % | n | % | n | % | |
Nobody | 5 | 3.9 (5/128) | 0 | 0.0 (0/109) | 6 | 7.7 (6/78) |
Only father | 13 | 11.8 (13/110) | 3 | 6.9 (3/43) | 6 | 15.0 (6/40) |
Only mother | 43 | 86.0 (43/50) | 40 | 90.9 (40/44) | 4 | 14.8 (4/27) |
Both | 77 | 90.6 (77/85) | 37 | 75.5 (37/49) | 6 | 16.7 (6/36) |