Table 2.

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

Sex	Baseline–Year 1	Years 1, 2, and 3	Years 3, 4, 5, and 6	Years 6, 7, 8, and 9	P value†
Female
Conventional
Predicted	0.2974	0.1512	0.1589	0.1681
Observed	0.3685	0.2228	0.1579	0.2495
n	278	276	226	67
Intensive
Predicted	0.9925	0.4267	0.3999	0.3677	0.0005
Observed	1.1103	0.4892	0.3080	0.3325
n	301	298	246	73
P value for difference between groups	0.0001	0.0002	0.0058	0.3870
Male
Conventional
Predicted	0.3903	0.1316	0.1148	0.0946
Observed	0.4026	0.1511	0.1402	0.1324
n	347	347	280	76
Intensive
Predicted	1.1335	0.3797	0.2940	0.1913	<0.0001
Observed	1.0926	0.4575	0.3172	0.2323
n	316	314	256	73
P value for difference between groups	<0.0001	<0.0001	0.0082	0.3573

^*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.