TABLE I.

Past-yr recreational Internet use (2001 report) and its estimated association (β, se) with BMI change (kg/m²), 2000 to 2001. Models of categorical Internet time appear in middle 5 columns, and continuous Internet models are on right. Models adjust for age, age², menarche (2000–2001), height growth (2000–2001), 2000 BMI.

Categories of Time for Internet Use						Continuous Internet Time
	None (referent)	1–5hrs/wk	6–10hrs/wk	11–15hrs	16+hrs/wk	β (se) (kg/m2 per hr/day)
Adjust for:
Sleep, Coffee, Alcohol	0	+.077	+.164**	+.061	+.198*	+.045*
		(.047)	(.056)	(.069)	(.082)	(.021)
Further adjust for:
Past Year Physical Activity, TV/videos,Games	0	+.069	+.150**	+.042	+.157#	+.034
		(.048)	(.056)	(.070)	(.084)	(.022)
Only Girls Aged 18+
(height growth and menarche omitted)	0	+.011	+.116	+.023	+.107	+.038
		(.085)	(.097)	(.123)	(.135)	(.035)

^#0.05<P<0.10

^*P<0.05

^**P<0.01