Table 4

Odds ratios and adjusted odds ratios for risk factors for wheeze between 18 and 30 months of age

Odds ratioAdjusted odds ratio
OR(95% CI)OR(95% CI)
Maternal smoking during pregnancy1.47(1.29 to 1.67)1.19(1.02 to 1.39)
ETS 1.31(1.18 to 1.45)1.17(1.03 to 1.32)
Maternal history of asthma2.00(1.72 to 2.31)2.03(1.74 to 2.37)
Preterm delivery1.59(1.26 to 2.01)1.66(1.30 to 2.13)
Male sex1.42(1.28 to 1.57)1.42(1.28 to 1.59)
Rented accommodation1.57(1.38 to 1.77)1.29(1.11 to 1.51)
Damp (fairly or very severe)1.46(1.16 to 1.82)1.08(0.77 to 1.52)
Mould (fairly or very severe)1.36(1.00 to 1.84)0.87(0.56 to 1.35)
Each additional child in household1.19(1.12 to 1.26)1.13(1.04 to 1.24)
Number of previous pregnancies1.13(1.09 to 1.18)1.01(0.95 to 1.08)
Single mother1.28(1.13 to 1.45)1.07(0.92 to 1.24)
Breast feeding (any)0.88(0.77 to 0.99)0.97(0.85 to 1.11)