. Author manuscript; available in PMC: 2018 Feb 21.

Published in final edited form as: Am J Prev Med. 2009 Jul;37(1 Suppl):S40–S49. doi: 10.1016/j.amepre.2009.04.010

Table 4.

Multilevel longitudinal models for fat free–mass index in 472 participants in Project HeartBeat!, 1991–1995

	Fat free-mass index (kg/m²)

	Model 1 Estimate±SE	Model 2 Estimate±SE	Model 3 Estimate±SE	Model 4 Estimate±SE
Parameter
Fixed parameters
Intercept	15.1669±0.0872^*	15.4774±0.1339^*	15.8114±0.1338^*	14.4491±0.1303^*
Energy intake (1000 kcal/day increments)	0.1870±0.0687^*	0.1675±0.0682^*	0.0100±0.0351	0.0094±0.0412
Sedentary behavior (100 min/day increments)^a	0.1017±0.0353^*	0.0980±0.0352^*	0.0128±0.0207	0.0406±0.0252
MVPA (100 min/day increments)	−0.1066±0.0588	−0.1069±0.0595	−0.0052±0.0340	−0.0368±0.0412
Gender^b		−0.7913±0.1882	−0.9214±0.1875^*	−0.9722±0.1972^*
Race^c		0.0574±0.3220	0.5816±0.2990	0.2551±0.2816
Gender×race		0.9262±0.4520^*	0.9612±0.4119^*	0.6287±0.3877
Age			0.7956±0.0371^*
Gender×age			−0.2098±0.0516^*
Sexual maturation
Pubic-Hair Stage 2				0.6216±0.1211^*
Pubic-Hair Stage 3				1.8329±0.1516^*
Pubic-Hair Stage 4				2.3358±0.1427^*
Pubic-Hair Stage 5				3.2599±0.1407^*
Gender×sexual maturation
Female×Pubic-Hair Stage 2				−0.1003±0.1784
Female×Pubic-Hair Stage 3				−0.4317±0.2125^*
Female×Pubic-Hair Stage 4				−0.4511±0.2058^*
Female×Pubic-Hair Stage 5				−0.9139±0.2104^*

Sedentary behavior includes TV viewing, computer use, and reading.

Gender is coded as 0=male, 1=female.

Race is coded as 0=nonblack, 1=black.

Boldface indicates significance at p<0.05.

MVPA, moderate-to-vigorous physical activity