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Table 5 Mixed models predicting %BF in females and males by PA category

From: The association between television viewing time and percent body fat in adults varies as a function of physical activity and sex

  Female Male
Not meeting PA guidelines Meeting PA guidelines Not meeting PA guidelines Meeting PA guidelines
Coef. SE Coef. SE Coef. SE Coef. SE
Fixed effects
Grand intercept 22.38**** 3.91 29.89**** 5.58 20.34*** 6.00 30.67**** 6.99
TV (h/wk) 1.14** .43 −.18 .53 .34 .71 .95 .81
Age (y) .20**** .06 .09 .06 .12 .08 −.03 .09
Race/ethnicity 4.06** 1.51 2.42 1.94 −6.54* 2.78 1.22 2.59
Education level .56 1.73 −3.43 2.15 −2.48 2.61 −3.18 3.47
Environmental score −.83 .54 .04 .58 −.01 .76 −.73 .87
Depression symptoms .20 .16 −.10 .17 −.26 .27 .85* .35
Perceived stress .12 .30 .81* .34 1.12 .58 −1.72** .63
Random effects
Level 1 variance 103.89**** 10.39 66.45**** 10.53 99.73**** 16.73 60.51**** 15.76
Level 2 variance 3.51 8.01 6.54 8.55 3.58 16.91 3.33 11.48
Model fit
AIC 1552   803   575.8   357.2  
n (individuals) 208   114   79   53  
k (block groups) 21   21   21   21  
  1. *p < 0.05;**p < 0.01;***p < 0.005;****p < 0.001. AIC – Akaike’s Information Criterion; Coef
  2. Coefficient; SE – Standard Error. Level 1 is the residual variance and Level 2 is the variance for intercept across block group