Table 4

Predictors of doctor diagnosis of atopic dermatitis (reported by parents) according to family history (Cox's regression analysis)

UnadjustedAdjusted
Independent variableNo of subjects (n=985)*No with diagnosis (n=184)Relative risk (95% CI)P valueRelative risk (95%CI)P value
Mother had atopic dermatitis:< 0.01< 0.01
 Yes46202.90 (1.82 to 4.62)2.42 (1.46 to 4.02)
 No9221621.001.00
Mother had asthma:< 0.010.36
 Yes 40 142.20 (1.27 to 3.79)1.32 (0.72 to 2.42)
 No9281681.001.00
Mother had hay fever:< 0.010.07
 Yes117331.73 (1.19 to 2.53)1.45 (0.97 to 2.18)
 No8511491.001.00
Father had atopic dermatitis:< 0.01< 0.01
 Yes23134.30 (2.44 to 7.56)3.89 (2.15 to 7.03)
 No9451691.001.00
Father had asthma:< 0.01< 0.01
 Yes32163.29 (1.97 to 5.50)2.70 (1.53 to 4.76)
 No9361661.001.00
Father had hay fever:0.010.16
 Yes104291.66 (1.11 to 2.47)1.37 (0.88 to 2.13)
 No8641531.001.00
Mother smoked during pregnancy:0.230.64
 Yes437750.83 (0.62 to 1.12)0.93 (0.68 to 1.27)
 No5441091.001.00
  • *Data missing on one or more variables for 18 subjects.

  • †Data for mothers with hay fever, father with atopic dermatitis, father with asthma, and father with hayfever missing for two cases.

  • ‡Adjusted for all other variables in table and for variables in table 3.