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. 2020 Jul 31;8(7):e14013. doi: 10.2196/14013

Table 4.

A comparison of nutrient intake levels from the Well-D app with those from the 24-hour recalls (n=25).

Nutrienta  Correlation coefficient P valueb
Energy (kcal/day) 0.68 <.01
Carbohydrate (% energy/day) 0.55 <.01
Protein (% energy/day) 0.60 <.01
Fat (% energy/day) 0.57 <.01
Saturated fat (% energy/day) 0.66 <.001
Total dietary fiber (g/day) 0.51 .01
Cholesterol (mg/day) 0.47 .02
Calcium (mg/day) 0.49 .01
Phosphorus (mg/day) 0.47 .02
Iron (mg/day) 0.71 <.001
Sodium (mg/day) 0.56 <.01
Potassium (mg/day) 0.56 <.01
Vitamin A (μg RE/day) 0.54 .01
Thiamine (mg/day) 0.43 .03
Riboflavin (mg/day) 0.50 .01
Niacin (mg/day) 0.70 <.001
Vitamin C (mg/day) 0.66 <.001

aThe residual method was used to adjust for nutrient intake.

bEither Pearson correlation or Spearman correlation was used.