Table 5.

Cross-classification analysis derived from the electronic 12-hour dietary recall app versus the food frequency questionnaire for categories of food group consumption and strata: smoking: no and yes; physical activity (minutes/week): ≥150 and <150; and body mass index (kg/m²): <25 and ≥25. Comparison of the electronic 12-hour dietary recall app versus the food frequency questionnaire.

Agreement	Alla	Smoking		Physical activity (minutes/week)		Body mass index (kg/m2)
		No	Yes	≥150	<150	<25	≥25
Exact agreementb (%)	50.7	50.9	49.7	51.4	49.4	51.5	49.6
Exact agreement + adjacentc (%)	90.2	90.4	90.0	90.4	90.0	91.3	88.6
Extreme disagreementd (%)	0.0	0.0	0.0	0.0	0.0	0.0	0.0

^aData presented are mean agreement for 10 different food groups: fruit, vegetables, legumes, chicken/turkey, fish, red meat, soft drinks, sweets, prepared foods, and beer.

^bExact agreement: cases cross-classified into the same category.

^cExact agreement + adjacent: cases cross-classified into the same or adjacent category.

^dExtreme disagreement: cases cross-classified into extreme categories.