Table 4

Cross-classification into quintiles between FFQ-derived estimates and biomarkers (Energy-adjusted data)
Men Women
FFQ-estimated daily dietary intakes Biomarkers Same (%) Within one (%) Extreme (%) ĸ Same (%) Within one (%) Extreme (%) ĸ
Food groups Fruits (g/day) β-carotene (mg/L) 20.96 54.9 5.01 0.07 24.28 56.25 5.05 0.1
Vegetables (g/day) β-carotene (mg/L) 23.23 59.22 5.47 0.11 25.72 55.77 6.91 0.07
Fruits and vegetables (g/day) β-carotene (mg/L) 21.64 57.63 4.56 0.1 23.32 54.81 5.05 0.08
Micro-nutrients Vitamin B12 (μg) B12 (pg/ml) 23.56 54.04 6.24 0.07 23.54 55.34 6.31 0.09
Vitamin B9 (μg) Serum folates (ng/ml) 25.35 64.52 3.23 0.21 27.1 65.95 2.64 0.23
Vitamin B9 (μg) Erythrocyte folates (ng/ml) 25.87 62.82 4.85 0.19 29.88 61.45 2.65 0.21
Vitamin D (μg) 25-OH Vitamine D (ng/ml) 29.2 68.14 7.08 0.19 37.7 67.21 0 0.37
Vitamin E (mg) α-tocopherol (mg/L) 25.29 60.69 6.44 0.11 21.65 54.98 6.33 0.06
Iron (mg) Iron (μmol/L) 19.59 51.03 9.11 -0.02 18.55 54.21 6.99 0.03
Iron (mg) Ferritin (ng/ml) 23.69 55.13 8.2 0.05 19.95 53.12 7.93 0
Iron (mg) Transferrin (g/L) 20.96 53.99 7.97 0.03 21.45 53.98 7.23 0.03
Iodine (μg) Iode/Creatinine ratio (μg/g) 21.5 58.42 4.21 0.1 24.56 59.5 4.81 0.14
Sodium (mg) Urine sodium (mmol/L) 22.81 53.51 6.58 0.06 19.08 54.02 5.52 0.05
β-carotene (μg) β-carotene (mg/L) 24.36 56.84 4.87 0.13 22.79 59.55 4.41 0.13

K: Kappa coefficient.

Sauvageot et al.

Sauvageot et al. Nutrition Journal 2013 12:143   doi:10.1186/1475-2891-12-143

Open Data