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. 2010 Sep 15;9:37. doi: 10.1186/1475-2891-9-37

Table 3.

Percent energy from macronutrients and nutrients and food estimates from the FFQ and WR

FFQ WR Ratio FFQ/WR Correlationa

Mean (SD) Mean (SD) Mean (SD)
Percent energy from
added sugar 5 (3.8)b 8 (3.9) 0.76 (0.54) 0.60c
carbohydrates 44 (6.1)b 42 (6.8) 1.06 (0.16) 0.51c
fat 33 (5.3)b 36 (5.6) 0.93 (0.17) 0.40c
protein 17 (2.4)b 16 (2.9) 1.08 (0.17) 0.55c
Intakes of Median (P25, P75) Median (P25, P75) Median (P25, P75)

antioxidants (mmol/d) 20 (15, 28)d 18 (12, 24) 1.16 (0.94, 1.57) 0.60g
vitamin C (mg/d) 136 (102, 178) 128 (88, 179) 1.12 (0.72, 1.82) 0.29g
β-carotene (mcg/d) 2402 (1508, 3519) 2079 (1225, 3101) 1.15 (0.70, 1.92) 0.38g
berries (g/d) 21 (13, 32)d 11 (3, 24) 1.55 (0.83, 3.25) 0.41g
chocolate (g/d) 7 (2, 17) 8 (0, 22) 0.63 (0.32, 1.91) 0.58g
coffee (g/d) 380 (89, 645)e 302 (99, 495) 1.10 (0.81, 1.81) 0.78g
fruit (g/d) 151 (80, 228) 127 (70, 248) 1.02 (0.71, 1.67) 0.61g
fruit and berry juices (g/d) 60 (19, 150) 73 (0, 178) 0.80 (0.38, 1.51) 0.57g
nuts (g/d) 6 (3, 12) 2 (0, 14) 0.65 (0.32, 1.44) 0.40g
tea (g/d) 90 (20, 400)f 80 (0, 298) 1.05 (0.55, 1.80) 0.74g
vegetables (g/d) 243 (166, 322)d 162 (118, 222) 1.39 (1.01, 2.03) 0.38g
wine (g/d) 45 (14, 106) 48 (0, 114) 0.96 (0.46, 1.49) 0.70g

Food frequency questionnaire, FFQ; weighed food record, WR; standard deviation, SD. N = 147. a all correlations were significant at the 0.01 level; b different from WR, p < 0.01; c Pearson correlation; d different from WR, p < 0.001, e different from WR, p = 0.003; f different from WR, p = 0.001, g Spearman correlation