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Table 2 Test-retest reliability of the VFR for daily energy and nutrient intake, n = 35

From: Reliability and validity of assessing energy and nutrient intake with the Vienna food record: a cross-over randomised study

  Testa mean (SD) Retestb mean (SD) Mean diff. (%) pc ICC (3.1)d pe SEMf
Energy (kcal) 2245 (496) 2301 (596) −56.2 (−3) 0.449 0.69 < 0.001 384.9
Total fat (g) 91.3 (27.3) 98.3 (32.6) −7.0 (−8) 0.135 0.59 < 0.001 24.4
SFA (g) 35.3 (11.8) 39.7 (14.0) −4.4 (− 12) 0.013 0.67 < 0.001 9.6
MUFA (g) 33.2 (11.8) 35.0 (12.4) −1.8 (−5) 0.313 0.63 < 0.001 9.3
PUFA (g) 16.7 (7.2) 16.8 (7.5) −0.1 (− 1) 0.948 0.19 0.136 8.3
Cholesterol (mg) 405 (176) 380 (139) 24.6 (6) 0.375 0.48 0.002 144.3
Protein (g) 95.3 (44.6) 94.3 (33.2) 1.0 (1) 0.868 0.61 < 0.001 30.9
Carbohydrates (g) 244 (48) 239 (59.6) 4.8 (2) 0.616 0.48 0.002 49.1
Fibres (g) 25 (9) 23.3 (8.6) 1.3 (5) 0.322 0.66 < 0.001 6.6
Total sugars (g) 86 (34) 88.5 (31.4) −2.5 (−3) 0.639 0.54 < 0.001 27.8
Alcohol (g) 7.0 (9.0) 9.4 (11.6) −2.4 (− 34) 0.251 0.30 0.037 11.0
Calcium (mg) 1002 (423) 1086 (457) −83.6 (−8) 0.112 0.75 < 0.001 276.1
Chloride (mg) 5924 (1777) 6061 (2271) − 137 (−2) 0.705 0.46 0.002 1879
Iron (mg) 16.0 (7.0) 15.5 (5.8) 0.4 (3) 0.720 0.37 0.014 6.4
Iodine (μg) 117 (43.8) 116 (45.3) 1.4 (1) 0.851 0.52 0.001 38.8
Magnesium (mg) 425 (151) 412 (147) 12.7 (3) 0.563 0.63 < 0.001 113.9
Phosphorus (mg) 1459 (530) 1504 (528) −45.1 (−3) 0.415 0.82 < 0.001 286.3
Potassium (mg) 3233 (858) 3517 (1238) − 284 (−9) 0.105 0.54 < 0.001 916.7
Sodium (mg) 3526 (1120) 3520 (1270) 6.6 (0) 0.971 0.61 < 0.001 942.7
Zinc (mg) 12.9 (5.3) 13.6 (4.7) −0.7 (−5) 0.344 0.63 < 0.001 3.9
Thiamine (mg) 1.3 (0.4) 1.4 (0.5) −0.1 (−8) 0.119 0.57 < 0.001 0.4
Riboflavin (mg) 1.7 (0.6) 1.8 (0.7) −0.2 (−12) 0.007 0.81 < 0.001 0.3
Niacin eq. (mg) 36.9 (13.0) 37.7 (13.8) −0.8 (−2) 0.691 0.58 < 0.001 10.9
Vit B5 (mg) 4.9 (1.4) 5.2 (1.8) −0.4 (−8) 0.054 0.76 < 0.001 1.0
Vit B6 (mg) 1.7 (0.7) 1.9 (1.0) −0.2 (− 12) 0.391 0.18 0.151 1.0
Vit B7 (μg) 54.2 (24.6) 52.3 (19.4) 1.9 (4) 0.651 0.42 0.006 21.3
Folic acid (μg) 291 (88.6) 310 (139) −19.9 (−7) 0.232 0.65 < 0.001 86.6
Vit B12 (μg) 7.7 (9.0) 6.4 (3.8) 1.3 (17) 0.435 0.01 0.467 8.7
Vit C (mg) 105 (63.4) 135 (201) −30.5 (−29) 0.367 0.12 0.236 188.7
Vit A - Carotene (μg) 8.0 (5.9) 8.1 (8.5) −0.1 (−1) 0.914 0.06 0.371 8.9
Retinol eq. (μg) 1.8 (1.0) 1.8 (1.5) 0 (0) 0.959 0.13 0.231 1.5
Vit D (μg) 5.1 (8.9) 4.9 (10.3) 0.2 (4) 0.759 0.95 < 0.001 12.1
Tocopherol eq. (mg) 15.3 (8.3) 13.6 (6.2) 1.7 (11) 0.108 0.64 < 0.001 5.6
Vit K (μg) 234 (162) 277 (317) −43.0 (−18) 0.366 0.39 0.009 247.5
Average    7%   0.52   
  1. a,bVienna Food Record (VFR), completed over 4 consecutive days including 1 weekend day
  2. c2-sided p-value derived from paired t-test
  3. dIntra-class correlation coefficient (3.1): absolute agreement, single values, two-way mixed
  4. ep-value derived from ICC
  5. fStandard error of measurement