Table 4

Odds ratios (95% confidence intervals) for hay fever and eczema reported at age 16 in 1986 v 1974, both before and after adjustment for potential risk factors (n=15 564)

Adjustment*Hay feverEczema
None2.23 (2.05 to 2.43)2.02 (1.73 to 2.36)
Sex2.24 (2.06 to 2.44)2.01 (1.73 to 2.35)
Birth weight2.24 (2.06 to 2.44)2.03 (1.74 to 2.37)
Birth order2.18 (2.00 to 2.38)2.00 (1.71 to 2.33)
Maternal age2.24 (2.05 to 2.44)2.01 (1.72 to 2.35)
Breast feeding2.45 (2.24 to 2.68)2.17 (1.85 to 2.56)
Maternal smoking in pregnancy2.29 (2.10 to 2.49)2.04 (1.75 to 2.39)
Father's social class at birth2.20 (2.02 to 2.40)2.01 (1.72 to 2.35)
Breast feeding + birth order2.35 (2.15 to 2.58)2.13 (1.81 to 2.51)
Breast feeding + birth order + father's social class2.29 (2.09 to 2.51)2.12 (1.80 to 2.50)
All the above2.14 (1.95 to 2.35)2.09 (1.76 to 2.48)
  • * By logistic regression.