Table 4

Crude odds ratio (cOR), adjusted odds ratio (AOR) and 95% confidence intervals (CI) for the associations between GP visits in the past two months and having a mother who smokes


cOR
AOR model 1
AOR model 2
AOR model 3

GP any reason
1.06 (0.86–1.31)
1.07 (0.85–1.35)
0.98 (0.77–1.24)
0.91 (0.71–1.16)
GP respiratory
0.96 (0.73–1.27)
0.89 (0.65–1.22)
0.79 (0.58–1.10)
0.71 (0.51–0.99)
     mild respiratory symptoms
0.71 (0.44–1.14)
0.64 (0.37–1.08)
0.58 (0.33–1.01)
-
     severe respiratory symptoms
1.10 (0.69–1.78)
0.90 (0.53–1.54)
0.86 (0.49–1.52)
-
GP non-respiratory
1.15 (0.88–1.48)
1.24 (0.93–1.66)
1.19 (0.89–1.60)
1.15 (0.86–1.55)

model 1: adjusted for smoking by the father

model 2: additional adjustment for gender of the child, doctor diagnosed asthma of the child ever, weight at birth, siblings, being breastfed, and age, ethnicity, education and allergic constitution of the parents

model 3: additional adjustment for severity of respiratory symptoms of the child

Jacobs-van der Bruggen et al. BMC Health Services Research 2007 7:83   doi:10.1186/1472-6963-7-83