Table 8

All dietary self-reports: a) energy b) protein c) protein density, regression of log(biomarker) on log(self-report) and other predictors in NPAAS (n = 450) and R2
Variable β SE R2 β SE R2 β SE R2
Intercept 7.614* 0.028 4.203* 0.051 2.649* 0.056
Log(E/P/PD FFQ-C) 0.018 0.019 3.920 0.009 0.032 9.557 0.049 0.084 5.918
Log(E/P/PD 4DFR-C) 0.156* 0.038 5.896 0.353* 0.061 14.545 0.393* 0.090 7.066
Log(E/P/PD 24Hr-C) -0.006 0.034 0.204 0.189* 0.060 1.551 0.180* 0.090 0.956
BMI-C 0.013* 0.001 26.722 0.008* 0.003 4.112 -0.004 0.003 0.731
Age-C -0.009* 0.001 8.130 -0.010* 0.002 2.502 -0.002 0.003 0.019
Race: 1.049 2.421 2.891
Black -0.019 0.021 -0.132* 0.039 -0.131* 0.041
Hispanic -0.054* 0.022 -0.085* 0.040 -0.079 0.044
Other -0.035 0.039 -0.001 0.072 -0.028 0.079
Meals at Home: 0.204 0.298 0.122
Med -0.018 0.017 0.043 0.032 0.034 0.034
High -0.003 0.018 0.041 0.033 0.030 0.036
Body Image: 0.271 0.315 0.467
Med -0.026 0.021 0.003 0.038 0.047 0.042
High -0.039 0.034 0.067 0.062 0.089 0.069
TFEQ-R18:
Restraint: 0.257 0.051 0.177
Med 0.021 0.016 -0.014 0.030 -0.029 0.032
High 0.030 0.019 0.019 0.037 -0.002 0.040
Unc. Eat: 0.540 0.363 0.365
Med -0.020 0.018 -0.042 0.034 -0.054 0.037
High. -0.023 0.021 -0.037 0.039 -0.056 0.043
Emo. Eat: 0.532 1.083 0.520
Med 0.014 0.018 0.054 0.033 0.052 0.037
High -0.023 0.024 -0.034 0.045 0.015 0.050
Social Desirability: 0.176 0.125 0.503
Med 0.018 0.017 0.014 0.031 -0.031 0.034
High 0.007 0.018 0.029 0.034 0.023 0.036
Total1 47.902 36.922 19.733

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.

Log E/P/PD stands for E = Energy for corresponding a) Energy data; P = Protein for corresponding b) Protein data; PD = Protein Density for corresponding c) Protein Density data.

Mossavar-Rahmani et al.

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

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