Table 3.

Spearman correlation coefficients 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 food frequency questionnaire. Spearman correlation coefficients (95% CI).

Food groups	Alla	Smoking		Physical activity (minutes/week)		Body mass index (kg/m2)
		No	Yes	≥150	<150	<25	≥25
Fruit	0.80 (0.75-0.84)	0.80 (0.74-0.85)	0.81 (0.64-0.90)	0.80 (0.72-0.85)	0.81 (0.71-0.88)	0.78 (0.70-0.84)	0.85 (0.77-0.91)
Vegetables	0.70 (0.62-0.76)	0.73 (0.65-0.79)	0.53b (0.22-0.74)	0.70 (0.60-0.77)	0.64 (0.48-0.76)	0.69 (0.59-0.77)	0.75 (0.62-0.84)
Legumes	0.48 (0.37-0.58)	0.49 (0.37-0.60)	0.41b (0.07-0.66)	0.46 (0.32-0.59)	0.52 (0.33-0.68)	0.47 (0.33-0.59)	0.51 (0.31-0.66)
Chicken/Turkey	0.58 (0.48-0.67)	0.63 (0.52-0.71)	0.38b (0.04-0.64)	0.57 (0.44-0.67)	0.61 (0.44-0.74)	0.61 (0.49-0.71)	0.54 (0.34-0.69)
Fish	0.53 (0.42-0.62)	0.52 (0.40-0.62)	0.59 (0.31-0.78)	0.52 (0.39-0.64)	0.51 (0.31-0.67)	0.58 (0.45-0.68)	0.42 (0.21-0.60)
Red meat	0.63 (0.53-0.70)	0.62 (0.52-0.71)	0.64 (0.38-0.81)	0.64 (0.53-0.73)	0.60 (0.42-0.73)	0.62 (0.50-0.71)	0.64 (0.47-0.76)
Soft drinks	0.83 (0.78-0.87)	0.83 (0.77-0.87)	0.85 (0.72-0.92)	0.84 (0.79-0.89)	0.80 (0.70-0.87)	0.82 (0.76-0.87)	0.83 (0.73-0.89)
Sweets	0.72 (0.64-0.78)	0.72 (0.64-0.79)	0.67 (0.42-0.82)	0.71 (0.62-0.79)	0.75 (0.62-0.84)	0.71 (0.61-0.78)	0.74 (0.61-0.83)
Prepared foods	0.59 (0.49-0.67)	0.62 (0.52-0.71)	0.44b (0.12-0.68)	0.58 (0.45-0.68)	0.59 (0.41-0.72)	0.58 (0.45-0.68)	0.61 (0.43-0.74)
Beer	0.88 (0.85-0.91)	0.87 (0.83-0.91)	0.88 (0.77-0.94)	0.91 (0.88-0.94)	0.82 (0.73-0.89)	0.91 (0.87-0.93)	0.85 (0.76-0.90)
Average	0.67 (—c)	0.68 (—)	0.62 (—)	0.67 (—)	0.67 (—)	0.68 (—)	0.67 (—)

^aP<.001 for all data, except:

^bP<.05.

^c—: not applicable.