Measuring social desirability bias in a multi-ethnic cohort sample: its relationship with self-reported physical activity, dietary habits, and factor structure

Table 4 Summary of hierarchical regression analysis for variables predicting self-reported diet scores (DASH scores), self-reported physical activity scores (GPAQ grand MET score), self-reported sedentary level scores (GPAQ sedentary score)

Variable	b	p value	95% CI	F	R²	R² change
DASH score (step 2)				22.00	0.150	0.0150
21-item MCSDS	0.16	< 0.001	0.09, 0.23
GPAQ grand MET score (step 2)				3.93	0.089	0.0024
21-item MCSDS	73.27	0.048	0.81, 145.73
GPAQ sedentary score (step 2)				14.1	0.141	0.0089
21-item MCSDS	-5.48	< 0.001	-8.34, -2.62

note: step 1 comprised of confounding variables, such as age, gender, ethnicity, highest education status, marital status, personal monthly income, and BMI; variable parameters described here belong to the final step of the model; boldface R² change represents significance at p < .05; DASH scores refers to the total tally of dietary quality scores in seven categories; GPAQ grand MET score refers to the level of physical activity; GPAQ sedentary score refers to the level of sedentary activity

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