Table 5

Energy, regression of log(biomarker) on log(self-report) and other predictors in NPAAS (n = 450) and R2
Food frequency questionnaire (FFQ) 4 day food record 24 hour dietary recall
Variable β SE R2 β SE R2 β SE R2
Intercept 7.6551* 0.029 7.6260* 0.028 7.6397* 0.028
Log(FFQ- Calories-C) 0.0459* 0.018 3.624 0.1559* 0.029 8.381 0.0921* 0.027 3.056
BMI-C 0.0136* 0.002 27.847 0.0136* 0.001 27.729 0.0137* 0.001 29.497
Age-C -0.0092* 0.001 9.485 -0.0089* 0.001 8.257 -0.0089* 0.001 8.786
Race: 1.405 1.420 1.441
Black -0.0298 0.021 -0.0292 0.020 -0.0303 0.020
Hispanic -0.0609* 0.023 -0.0604* 0.022 -0.0595* 0.022
Other -0.0448 0.040 -0.0401 0.039 -0.0413 0.040
Meals at home: 0.628 0.282 0.364
Med -0.0332 0.017 -0.0212 0.017 -0.0239 0.017
High -0.0151 0.018 -0.0041 0.018 -0.0054 0.018
Body Image: 0.375 0.369 0.356
Med -0.0275 0.021 -0.0283 0.021 -0.0267 0.021
High -0.0528 0.035 -0.0499 0.034 -0.0504 0.034
TFEQ-R18:
Restraint: 0.337 0.302 0.237
Med 0.0251 0.017 0.0231 0.016 0.0207 0.016
High 0.0295 0.020 0.0312 0.019 0.0267 0.020
Unc. Eat.: 0.795 0.666 0.819
Med -0.0286 0.019 -0.0256 0.018 -0.0289 0.018
High -0.0296 0.022 -0.0257 0.021 -0.0298 0.021
Emo. Eat.: 0.328 0.428 0.372
Med 0.0087 0.019 0.0123 0.018 0.0121 0.018
High -0.0217 0.025 -0.0217 0.025 -0.0185 0.025
Social Desirability: 0.075 0.124 0.155
Med 0.0117 0.017 0.0147 0.017 0.0160 0.017
High 0.0026 0.019 0.0019 0.018 0.0021 0.018
Total1 44.897 47.959 45.084

BMI, body mass index.

*β Coefficient differs from zero at p = 0.05 significance level.

1Total – percent of variation explained by all variables. R2 values for specific variables arise from analyses with only these regression variables, with subsequent rescaling so that these R2 values add to the total regression R2. R2 values for race/ethnicity pertain to comparisons among the four groups (white, black, Hispanic, other minority).

Suffix C (e.g. BMI-C) = Centered values; for psychosocial & meals at home variables: medium and high are compared to low.

Mossavar-Rahmani et al.

Mossavar-Rahmani et al. Nutrition Journal 2013 12:63   doi:10.1186/1475-2891-12-63

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