. 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 3.

Multilevel longitudinal models for BMI in 472 participants in Project HeartBeat!, 1991–1995

	BMI (kg/m²)

	Model 1 Estimate±SE	Model 2 Estimate±SE	Model 3 Estimate±SE	Model 4 Estimate±SE
Parameter
Fixed parameters
Intercept	20.2332±0.1833^*	20.0861±0.2769^*	20.3231±0.2938^*	19.3467±0.2838^*
Energy intake (1000 kcal/day increments)	−0.0456±0.0806	−0.0350±0.0812	−0.0549±−0.0520	−0.0780±0.0637
Sedentary behavior (100 min/day increments)^a	0.0970±0.0424^*	0.0996±0.0423^*	0.0349±0.0300	0.0552±0.0384
MVPA (100 min/day increments)	−0.2292±0.0715^*	−0.2389±0.0747^*	−0.0764±0.0506	−0.2009±0.0688^*
Gender^b		−0.2632±0.3844	−0.1435±0.4125	−0.9235±0.4110
Race^c		0.0054±0.6504	0.8658±0.6524	0.2946±0.6291
Gender×race		2.8796±0.9182^*	2.3855±0.8934^*	2.5105±0.8791^*
Age			0.6918±0.0599^*
Gender×age			0.0371±0.0835
Sexual maturation
Pubic-Hair Stage 2				0.5176±0.1886^*
Pubic-Hair Stage 3				1.1847±0.2322^*
Pubic-Hair Stage 4				1.2976±0.2212^*
Pubic-Hair Stage 5				2.1965±0.2214^*
Gender×sexual maturation
Female×Pubic-Hair Stage 2				0.2052±0.2791
Female×Pubic-Hair Stage 3				0.2922±0.3286
Female×Pubic-Hair Stage 4				0.9129±0.3238^*
Female×Pubic-Hair Stage 5				0.6091±0.3354

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