TABLE 3

Association between maternal body mass index and number of wheezing days in the offspring in the imputed data, stratified by maternal atopy

ModelNo maternal atopyMaternal atopyp-value interaction
IRR (95% CI)p-valueIRR (95% CI)p-value
11.027 (1.007–1.048)0.010.978 (0.951–1.005)0.11<0.01
21.020 (1.000–1.042)0.050.980 (0.953–1.008)0.16<0.01
31.023 (1.003–1.045)0.030.981 (0.953–1.010)0.19<0.01
41.022 (1.001–1.043)0.040.980 (0.953–1.008)0.16<0.01
51.010 (0.988–1.033)0.380.976 (0.949–1.004)0.090.03
  • IRR: incidence rate ratio; 1: univariable; 2: daycare, breastfeeding, older siblings, smoke exposure during pregnancy, pet keeping, socioeconomic status, ethnicity and maternal age; 3: all variables of model 2 and birthweight; 4: all variables of model 2 and compliance of the respiratory system; 5: all variables of model 2 and resistance of the respiratory system.