Table 2.
Mean energy and nutrient intake assessed by myfood24-Germany and a weighed dietary record (WDR) in n = 97 participants for the same day of consumption
| Nutrient intake | myfood24 (n = 97 recalls) | WDR (n = 97 days) | Ratio of intake (myfood24/WDR) | Spearman Correlation* | |
|---|---|---|---|---|---|
| Geo. mean (CV) | Geo. mean (CV) | Geo. mean (95% Cl) | Raw | Adjusteda | |
| Energy (kcal) | 1835 (0.31) | 1909 (0.28) | 0.96 (0.92, 1.01) | 0.70 | |
| Fat (g) | 68.8 (0.59) | 72.7 (0.53) | 0.95 (0.89, 1.01) | 0.78 | 0.76 |
| SFA (g) | 26.0 (0.71) | 28.3 (0.63) | 0.92 (0.85, 0.99) | 0.81 | 0.76 |
| MUFA (g) | 23.4 (0.66) | 25.0 (0.61) | 0.93 (0.87, 1.01) | 0.77 | 0.76 |
| PUFA (g) | 11.7 (0.74) | 11.1 (0.68) | 1.05 (0.97, 1.15) | 0.77 | 0.78 |
| Protein (g) | 66.6 (0.48) | 67.2 (0.42) | 0.99 (0.94, 1.05) | 0.81 | 0.80 |
| Carbohydrate (g) | 201.0 (0.37) | 210.9 (0.35) | 0.95 (0.90, 1.01) | 0.66 | 0.77 |
| Starch (g) | 102.3 (0.65) | 106.9 (0.57) | 0.96 (0.88, 1.04) | 0.71 | 0.77 |
| Fibre (g) | 22.9 (0.53) | 23.9 (0.53) | 0.96 (0.90, 1.02) | 0.77 | 0.83 |
| Total sugars (g) | 77.2 (0.54) | 84.4 (0.53) | 0.92 (0.86, 0.98) | 0.77 | 0.74 |
| Cholesterol (mg) | 134.3 (3.63) | 125.8 (4.55) | 1.07 (0.90, 1.27) | 0.87 | 0.85 |
| Alcohol (g) | 0.7 (16.06) | 0.7 (17.57) | 1.03 (0.81, 1.32) | 0.84 | 0.84 |
| Sodium (g) | 2.0 (0.61) | 2.3 (0.60) | 0.89 (0.81,0.98) | 0.70 | 0.64 |
| Potassium (g) | 2.8 (0.40) | 3.1 (0.38) | 0.90 (0.86,0.96) | 0.74 | 0.76 |
| Calcium (g) | 0.8 (0.54) | 0.9 (0.54) | 0.92 (0.86, 0.98) | 0.79 | 0.70 |
| Magnesium (g) | 0.4 ( 0.44) | 0.4 (0.43) | 0.98 (0.93, 1.03) | 0.75 | 0.80 |
| Phosphorous (g) | 1.2 (0.42) | 1.3 (0.42) | 0.95 (0.90, 1.01) | 0.78 | 0.75 |
| Iron (mg) | 12.3 (0.49) | 12.8 (0.48) | 0.96 (0.90, 1.03) | 0.75 | 0.71 |
| Copper (mg) | 1.7 (0.49) | 2.0 (0.45) | 0.85 (0.79, 0.91) | 0.71 | 0.70 |
| Zinc (mg) | 9.7 (0.46) | 10.2 (0.43) | 0.95 (0.90, 1.01) | 0.70 | 0.65 |
| Iodine (ug) | 81.2 (0.73) | 91.2 (0.83) | 0.89 (0.78, 1.02) | 0.53 | 0.45 |
| Retinol (Equ) (mg) | 1.1 (0.94) | 1.2 (0.89) | 0.90 (0.82, 0.98) | 0.83 | 0.81 |
| β-carotene (mg) | 3.2 (1.67) | 4.1 (1.37) | 0.77 (0.65, 0.92) | 0.76 | 0.74 |
| Vitamin D (ug) | 1.6 (1.46) | 1.8 (1.40) | 0.93 (0.80, 1.09) | 0.76 | 0.72 |
| Vitamin E (mg) | 11.7 (0.65) | 12.9 (0.60) | 0.91 (0.82, 1.00) | 0.65 | 0.61 |
| Thiamin (mg) | 1.1 (0.52) | 1.3 (0.50) | 0.88 (0.81, 0.96) | 0.66 | 0.66 |
| Niacin (mg) | 13.9 (0.55) | 15.0 (0.50) | 0.93 (0.86, 1.00) | 0.72 | 0.77 |
| Vitamin B6 (mg) | 1.4 (0.55) | 1.7 (0.45) | 0.83 (0.77, 0.90) | 0.74 | 0.72 |
| Vitamin B12 (ug) | 1.4 (2.18) | 1.7 (1.48) | 0.54 (0.46, 0.64) | 0.80 | 0.73 |
| Folate (Equ) (ug) | 242.6 (0.54) | 343.6 (0.44) | 0.71 (0.65, 0.76) | 0.61 | 0.61 |
| Pantothenic acid (mg) | 4.2 (0.54) | 5.4 (0.45) | 0.78 (0.73, 0.84) | 0.68 | 0.71 |
| Biotin (ug) | 43.5 (0.58) | 50.2 (0.53) | 0.87 (0.80, 0.94) | 0.70 | 0.64 |
| Vitamin C (mg) | 85.1 (1.09) | 108.9 (0.98) | 0.78 (0.69, 0.88) | 0.78 | 0.79 |
Geo. mean = geometric mean, CV coefficient of variation
*p < 0.0001 for all displayed correlations
aCorrelation for nutrient densities (nutrient intake per 1000 kcal), a constant was added to each individual intake value when the calculation of geometric mean was not possible due to intake value of zero and subtracted from the result for absolute numbers (alcohol, vitamin D, vitamin B12)