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. 2008 Dec 3;89(1):169–176. doi: 10.3945/ajcn.2008.26630

TABLE 4.

Mixed-effects, random-coefficient model of weight change as a function of activity energy expenditure (AEE)1

Coefficient 95% CI P
Model 1: log likelihood ratio = −2601.402
 Baseline weight (kg) 0.990 0.976, 1.004 <0.001
 Age (y) −0.006 −0.027, 0.016 0.73
 Time (y) 0.545 0.266, 0.824 <0.001
 AEE (MJ/d) −0.072 −0.287, 0.143 0.51
 Site 0.073 −0.523, 0.668 0.81
Model 2: log likelihood ratio = −2599.003
 Baseline weight (kg) 0.990 0.976, 1.004 <0.001
 Age (y) −0.005 −0.027, 0.017 0.65
 Time (y) −0.244 −1.143, 0.655 0.59
 AEE (MJ/d) −0.136 −0.361, 0.090 0.24
 Site 0.041 −0.578, 0.661 0.90
 Time × AEE 0.228 −0.017, 0.472 0.07
 Time × site 0.107 −0.464, 0.678 0.71
1

n = 148 Nigerian and 172 US women with a total of 987 weight determinations. Likelihood ratio test statistic for a comparison of model 1 and model 2: 4.73 (P = 0.09).

2

Estimated regression coefficients of model using random time coefficients and random intercepts and including AEE, age, and site as fixed effects.

3

Estimated regression coefficients of model using random time coefficients and random intercepts and including AEE, age, and site as fixed effects and including interaction terms for time-by-AEE and time-by-site.