. Author manuscript; available in PMC: 2015 Feb 12.

Published in final edited form as: J Aging Health. 2012 Dec 21;25(2):342–363. doi: 10.1177/0898264312468593

Table 2.

Estimates of Growth Curves Parameters for Distinct Trajectories of BMI: 1992-2006.

Trajectory	M₀	M₁	M₂	M₃
Trajectory 1
Normal, increasing (accelerating)
Intercept	22.122^***	22.015^***	21.602^***	21.505^***
Linear slope	0.069^***	0.064^***	0.073^***	0.073^***
Quadratic slope	0.011^***	0.011^***	0.010^***	0.012^***
Trajectory 2
Overweight, increasing (linear)
Intercept	26.067^***	26.081^***	26.208^***	25.679^***
Linear slope	0.070^***	0.072^***	0.073^***	0.073^***
Quadratic slope	0.003^**	0.002	0.002	0.001
Trajectory 3
Borderline obese, increasing (linear)
Intercept	29.869^***	29.974^***	30.432^***	29.484^***
Linear slope	0.016^*	0.028^***	0.039^***	0.033^***
Quadratic slope	0.001	−0.001	0.000	−0.001
Trajectory 4
Obese, increasing (linear)
Intercept	34.905^***	35.000^***	36.208^***	33.745^***
Linear slope	0.042^***	0.069^***	0.039^***	0.011
Quadratic slope	−0.006^*	−0.005^*	−0.005^*	−0.008^***
Trajectory 5
Morbidly obese, increasing (decelerating)
Intercept	43.441^***	43.504^**	43.279^***	42.239^***
Linear slope	0.077^***	0.073^***	0.146^***	0.097^***
Quadratic slope	−0.033^***	−0.030^***	−0.029^***	−0.033^***

Note. M₀ is the unconditional, time-only model; M₁ adjusted for mortality, attrition, and proxy status; M₂ adjusted for socioeconomic status measures; and M3 adjusted for health status indicators.

p < .05.

^**

p < .01.

^***

p < .001.