Table 4

Paternal smoking

Paternal smokingaCaseControlORb95% CI
n%n%
Lifetime
Never20953.621254.51.0
Ever18146.417745.51.00.7–1.3
Around pregnancyc
Never24863.625365.51.0
Ever14236.413334.51.00.7–1.4
1 mo before conception
Never25364.926768.61.0
Ever13735.112231.41.20.8–1.6
1st trimester
Never26066.726969.21.0
Ever13033.312030.91.10.8–1.5
Cigsd/day 1 mo before conception
025365.526769.21.0
≤5153.9133.41.30.6–2.8
5–10246.2246.21.00.5–1.9
10–206015.55815.01.10.7–1.7
>20348.8246.21.50.8–2.7
Cigs/day during 1st trimester
026067.426970.1
≤5143.6123.11.30.5–3.0
5–10205.2225.70.90.5–1.8
10–206115.85714.81.10.7–1.7
>20318.0246.31.30.7–2.3
Smokeless tobacco 1 mo before conception
Never34893.136594.1
Ever267.0235.91.30.7–2.6
  • a A total of one control had missing information on tobacco use history. Includes direct and proxy data.

  • b Adjusted for child’s gender, mother’s race, father’s education, and household income in birth year.

  • c Included 1 month before and during the pregnancy.

  • d Cigs, cigarettes.