Table 3.

Hierarchical regression predicting girls’ change in BMI from age 5 to 7 y

Variables entered	P-value at entry	r2	Δr2	F-test for Δr2	d.f.	P-value for Δr2
Step 1: control variables		0.16	0.16	7.46	4	0.0001
Girls’ BMI at age 5	0.0001
Mothers’ education	0.51
Fathers’ education	0.95
Family income	0.77
Step 2: parent weight status		0.19	0.03	6.53	3	0.09
Family risk of overweight	0.03
Mothers’ change in BMI	0.07
Fathers’ change in BMI	0.13
Step 3: parent physical activity		0.23	0.04	5.96	4	0.25
Mothers’ frequency of activity	0.34
Fathers’ frequency of activity	0.34
Mothers’ enjoyment of activity	0.99
Fathers’ enjoyment of activity	0.08
Step 4: parent dietary intake		0.29	0.06	12.61	4	0.025
Mothers’ energy intakea	0.52
Fathers’ energy intakea	0.08
Mothers’ percentage fat intake	0.72
Fathers’ percentage fat intake	0.85
Step 5: girls’ physical activity		0.29	0.00	0	2	NS
Girls’ activity relative to others	0.81
Girls’ tendency toward activity	0.93
Step 6: girls’ dietary intake		0.32	0.03	4.66	2	0.10
Girls’ energy intakea	0.70
Girls’ percentage fat intake	0.02
Final model		0.26	NA	9.27	6	0.0001
Girls’ BMI at age 5	0.0001
Family risk of overweight	0.005
Mothers’ change in BMI	0.05
Fathers’ enjoyment of activity	0.01
Fathers’ energy intakea	0.09
Girls’ percentage fat intake	0.01

^aEnergy intake controls for body weight.