TABLE E3.

Longitudinal analysis by random-effects model of base 10 log-transformed BMI at Yr11, Yr16, Yr22, and Yr26 as the dependent variable and potential confounders at the 4 surveys (n = 584; obs = 1670)^*

Independent variables	Coefficient	95% CI	P value
High PFvar at Yr11	0.016	−0.008 to 0.041	.195
Age	0.019	0.018 to 0.021	<.001
Age2	−0.0005	−0.0006 to −0.0004	<.001
High PFvar × Age	0.002	0.0005 to 0.003	.008
Male sex	0.002	−0.012 to 0.016	.784
Concurrent asthma	0.010	−0.0007 to 0.019	.035
Concurrent atopy	−0.005	−0.013 to 0.003	.220
Concurrent METs†	−0.003	−0.007 to −0.0001	.041
Maternal education ≤12 y	0.011	−0.006 to 0.0297	.218
Paternal education ≤12 y	0.023	0.005 to 0.041	.012
≥1 Hispanic parent‡	0.014	−0.003 to 0.030	.105
Other ethnicity‡	0.015	−0.007 to 0.037	.173

^*Yr11 was centered at the youngest age, 9.2 y, to facilitate interpretation of the main effect coefficient of PFvar.

^†METs were used as an ordinal variable at each survey where the first category was 0 MET h/wk, the second category was between 1 and 40 MET h/wk, and the third category was >40 MET h/wk (see text).

^‡Reference category: both non-Hispanic white parents.