TABLE 1

Effects of adding birth weight and weight change to the prediction model for insulin resistance once current weight has been accounted for

Modeldfrr2r2 changer2 change P value
Boys
 Weight SDS at 5 years1520.180.0330.0330.03
 Weight SDS at 5 years + birth weight1510.210.0450.0120.18
 Weight SDS at 5 years + weight SDS change1510.210.0450.0120.18
Girls
 Weight SDS at 5 years1230.330.1110.111<0.001
 Weight SDS at 5 years + birth weight1220.350.1210.0110.22
 Weight SDS at 5 years + weight SDS change1220.350.1210.0110.22
  • The effect of adding birth weight SDS to the model containing weight SDS at 5 years is identical to that of adding weight change. This is because weight change is equal to weight SDS at 5 years minus birth weight SDS.