Table 2.
Mean daily nutrient intakes estimated by printed EPIC-Norfolk FFQaand online Food4Me FFQ (n=113).
| Nutrient | EPIC-Norfolk FFQ,mean (SD) | Food4Me FFQ,mean (SD) | P valueb | P valuec |
| Energy (kcal) | 1684.62 (483.41) | 2356.08 (809.36) | - | - |
| Total Fat (g) | 66.10 (24.27) | 89.48 (38.23) | .001 | .001 |
| Total Fat (% TEd) | 34.88 (6.18) | 33.50 (5.31) | .07 | .03 |
| SFAe (g) | 24.91 (10.50) | 36.03 (16.52) | .29 | .29 |
| SFA (% TE) | 13.13 (3.40) | 13.39 (2.78) | .52 | .73 |
| MUFAf(g) | 23.26 (8.75) | 32.82 (14.84) | .09 | .09 |
| MUFA (% TE) | 12.26 (2.35) | 12.27 (2.54) | .99 | .99 |
| PUFAg(g) | 12.18 (6.33) | 14.33 (5.97) | <.001 | <.001 |
| PUFA (% TE) | 6.44 (2.63) | 5.46 (1.15) | <.001 | <.001 |
| Protein (g) | 75.53 (21.82) | 96.92 (36.87) | .26 | .91 |
| Protein (% TE) | 18.33 (4.24) | 16.56 (3.35) | .001 | .001 |
| Carbohydrate (g) | 197.09 (69.81) | 281.89 (96.48) | .09 | .12 |
| Carbohydrate(% TE) | 46.82 (8.14) | 48.41 (6.91) | .11 | .06 |
| Total sugars (g) | 103.92 (45.78) | 130.00 (48.61) | .04 | .001 |
| Alcohol (g) | 7.21 (9.10) | 13.61 (15.72) | .18 | .18 |
| Calcium (mg) | 835.03 (255.85) | 1159.12 (459.22) | .17 | .17 |
| Total folate (µg) | 250.16 (68.70) | 375.16 (136.40) | <.001 | <.001 |
| Iron (mg) | 9.70 (2.74) | 15.91 (5.97) | <.001 | <.001 |
| Total carotene (µg) | 3512.61 (2004.14) | 5811.99 (4180.17) | .001 | .02 |
| Riboflavin (mg) | 1.74 (0.47) | 2.42 (0.92) | .02 | .02 |
| Thiamin (mg) | 1.34 (0.37) | 2.42 (1.66) | <.001 | <.001 |
| Vitamin B6 (mg) | 2.03 (0.52) | 2.84 (1.08) | .03 | .01 |
| Vitamin B12 (µg) | 5.93 (2.79) | 7.22 (3.24) | .49 | .49 |
| Vitamin C (mg) | 107.12 (55.87) | 164.50 (87.85) | .003 | .11 |
| Vitamin A (RE) (µg) | 984.94 (470.95) | 1735.23 (3712.62) | .04 | .95 |
| Retinol (µg) | 385.73 (300.15) | 445.73 (277.59) | .02 | .02 |
| Vitamin D (µg) | 2.96 (1.90) | 3.67 (2.15) | .44 | .48 |
| Vitamin E (mg) | 10.64 (4.63) | 10.71 (4.32) | <.001 | <.001 |
| Sodium (mg) | 2442.27 (772.86) | 2597.38 (1070.53) | <.001 | <.001 |
| Salt (g) | 6.11 (1.93) | 6.49 (2.68) | <.001 | <.001 |
aFFQ: food frequency questionnaire.
bAll P values were derived by controlling for energy using general linear model analysis.
cControlled for energy and, where appropriate, center, gender, and randomization group using general linear model analysis. No significant interactions were observed between method and gender, center and randomization group.
dTE: total energy.
eSFA: saturated fatty acids.
fMUFA: monounsaturated fatty acids.
gPUFA: polyunsaturated fatty acids.