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. 2019 Apr 11;7(4):e11531. doi: 10.2196/11531

Table 2.

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: age (years): <25 and ≥25; gender: females and males; and occupation: students and employees. Comparison of the electronic 12-hour dietary recall app versus food frequency questionnaire. Spearman correlation coefficients (95% CI).

Food groups Alla Age (years) Gender Occupation

<25 ≥25 Females Males Students Employees
Fruit 0.80 (0.75-0.84) 0.82 (0.73-0.88) 0.79 (0.71-0.85) 0.76 (0.67-0.83) 0.85 (0.78-0.90) 0.84 (0.76-0.89) 0.77 (0.68-0.83)
Vegetables 0.70 (0.62-0.76) 0.77 (0.66-0.85) 0.64 (0.52-0.74) 0.70 (0.60-0.78) 0.69 (0.56-0.78) 0.80 (0.71-0.86) 0.61 (0.48-0.71)
Legumes 0.48 (0.37-0.58) 0.47 (0.29-0.63) 0.51 (0.37-0.63) 0.51 (0.36-0.63) 0.46 (0.27-0.61) 0.50 (0.32-0.64) 0.49 (0.34-0.62)
Chicken/Turkey 0.58 (0.48-0.67) 0.49 (0.31-0.64) 0.63 (0.51-0.73) 0.58 (0.45-0.69) 0.60 (0.45-0.72) 0.53 (0.36-0.66) 0.62 (0.49-0.72)
Fish 0.53 (0.42-0.62) 0.62 (0.47-0.74) 0.48 (0.33-0.60) 0.52 (0.37-0.64) 0.56 (0.40-0.69) 0.65 (0.51-0.76) 0.44 (0.28-0.58)
Red meat 0.63 (0.53-0.70) 0.71 (0.58-0.80) 0.58 (0.45-0.69) 0.65 (0.53-0.75) 0.54 (0.37-0.67) 0.69 (0.56-0.79) 0.58 (0.44-0.69)
Soft drinks 0.83 (0.78-0.87) 0.79 (0.69-0.86) 0.85 (0.79-0.89) 0.82 (0.75-0.87) 0.84 (0.77-0.89) 0.81 (0.73-0.87) 0.85 (0.78-0.89)
Sweets 0.72 (0.64-0.78) 0.72 (0.59-0.81) 0.71 (0.61-0.79) 0.71 (0.61-0.79) 0.74 (0.63-0.82) 0.71 (0.59-0.80) 0.71 (0.60-0.79)
Prepared foods 0.59 (0.49-0.67) 0.57 (0.40-0.70) 0.59 (0.46-0.69) 0.57 (0.44-0.69) 0.61 (0.46-0.73) 0.61 (0.46-0.73) 0.55 (0.41-0.66)
Beer 0.88 (0.85-0.91) 0.86 (0.78-0.90) 0.88 (0.84-0.92) 0.87 (0.82-0.91) 0.88 (0.81-0.92) 0.86 (0.80-0.91) 0.89 (0.84-0.92)
Average 0.67 (—b) 0.68 (—) 0.67 (—) 0.67 (—) 0.68 (—) 0.70 (—) 0.65 (—)

aP<.001 for all data.

b—: not applicable.