Table 2—

Average annual rates of change in BMI: predicted and observed*

SexBaseline–Year 1Years 1, 2, and 3Years 3, 4, 5, and 6Years 6, 7, 8, and 9P value
Female
 Conventional
  Predicted0.29740.15120.15890.1681
  Observed0.36850.22280.15790.2495
  n27827622667
 Intensive
  Predicted0.99250.42670.39990.36770.0005
  Observed1.11030.48920.30800.3325
  n30129824673
P value for difference between groups0.00010.00020.00580.3870
Male
 Conventional
  Predicted0.39030.13160.11480.0946
  Observed0.40260.15110.14020.1324
  n34734728076
 Intensive
  Predicted1.13350.37970.29400.1913<0.0001
  Observed1.09260.45750.31720.2323
  n31631425673
P value for difference between groups<0.0001<0.00010.00820.3573
  • *

    * The upper figure of each pair is the average annual change in BMI predicted by the growth-curve model during the interval in question. The lower figure is the observed average rate of change for the same period. P values for the treatment-group difference in observed rates of change are from the Wilcoxon’s rank-sum test (baseline–year 1) or the Wei-Lachin test of stochastic ordering, applied separately for all other periods.

  • P value for test of trends over time, based on observed rates, between treatment groups within sex.