Table 2.

Prevalence of Children With a History of Ear Surgery Versus History of Maternal Smoking

Smoking (Cigarettes/Day)First Clinic VisitThird Trimester6 Months5 Years
No.%*No.%No.%No.%
(n = 5261)(n= 5203)(n = 5094)(n = 5218)
Nil1524.51574.71374.51534.7
1–9597.0375.3264.3265.9
10–19406.6436.9477.2446.9
20+399.8468.2607.4627.1
P .001.002.001.01
  • * Number and percentage of children in each smoking category with a history of ear surgery.

  • χ2 test.