Skip to main content

Table 3 Mean difference and correlation coefficient of intakes of energy and nutrients between 24hR-camera and WFR in 30 Japanese men

From: Validation of improved 24-hour dietary recall using a portable camera among the Japanese population

   24hR-camera WFR Difference:
24hR-camera
- WFR
Pb Correlation coefficient 95% Limits of agreementc
Nutrition   Mean ± SD Mean ± SD Mean difference (%)a Spearman (95%CI)
Energy kcal 2284.5 ± 401.9 2375.7 ± 457.5 -3.8 0.068 0.774 (0.574, 0.887) -608.8 (-26.1) 426.3 (18.3)
Protein g 86.6 ± 16.9 90.1 ± 17.8 -3.8 0.033 0.855 (0.715, 0.929) -20.0 (-22.7) 13.1 (14.8)
Lipid g 68.2 ± 23.9 68.2 ± 23.4 0.1 0.985 0.769 (0.565, 0.884) -27.1 (-39.8) 27.2 (39.9)
Carbohydrate g 295.6 ± 62.2 315.5 ± 65.2 -6.3 0.010 0.763 (0.555, 0.881) -97.2 (-31.8) 57.5 (18.8)
Ash g 20.1 ± 3.3 20.8 ± 4.9 -3.0 0.373 0.668 (0.405, 0.829) -8.1 (-39.6) 6.8 (33.5)
Potassium mg 2844.3 ± 559.8 2944.7 ± 584.2 -3.4 0.302 0.560 (0.250, 0.766) -1125.7 (-38.9) 924.9 (32.0)
Calcium mg 548.4 ± 227.8 570.7 ± 177.9 -3.9 0.331 0.909 (0.816, 0.956) -263.6 (-47.1) 219.1 (39.2)
Magnesium mg 312.2 ± 62.1 326.3 ± 73.9 -4.3 0.158 0.803 (0.623, 0.902) -118.5 (-37.1) 90.3 (28.3)
Phosphorus mg 1274.5 ± 255.7 1319.5 ± 256.1 -3.4 0.101 0.838 (0.684, 0.920) -330.2 (-25.5) 240.2 (18.5)
Iron mg 8.9 ± 2.0 9.2 ± 2.2 -3.5 0.150 0.908 (0.814, 0.956) -2.7 (-29.7) 2.0 (22.5)
Zinc mg 9.6 ± 2.2 10.3 ± 2.4 -6.2 0.001 0.894 (0.787, 0.949) -2.5 (-25.3) 1.2 (12.5)
Copper mg 1.4 ± 0.3 1.5 ± 0.3 -7.1 0.006 0.736 (0.511, 0.867) -0.5 (-34.0) 0.3 (19.3)
Manganese mg 4.2 ± 2.0 4.2 ± 1.2 0.6 0.931 0.781 (0.585, 0.891) -3.3 (-77.5) 3.3 (78.8)
Retinol μg 152.6 ± 83.0 164.4 ± 87.7 -7.1 0.145 0.867 (0.737, 0.935) -95.9 (-60.5) 72.4 (45.7)
beta-Carotene μg 5624.0 ± 3782.2 5154.5 ± 3214.8 9.1 0.328 0.735 (0.510, 0.866) -4596.9 (-85.3) 5536.0 (102.7)
Retinol activity equivalents μg 625.6 ± 317.8 598.2 ± 264.0 4.6 0.477 0.822 (0.656, 0.912) -382.1 (-62.4) 437.0 (71.4)
Vitamin D μg 11.4 ± 11.6 10.6 ± 9.9 7.6 0.418 0.890 (0.780, 0.947) -9.8 (-88.6) 11.4 (103.3)
α-Tocopherol mg 8.4 ± 2.8 8.1 ± 2.3 4.2 0.463 0.599 (0.304, 0.789) -4.6 (-55.4) 5.2 (63.6)
β-Tocopherol mg 0.5 ± 0.2 0.5 ± 0.2 12.7 0.048 0.727 (0.497, 0.862) -0.3 (-49.9) 0.4 (73.8)
γ-Tocopherol mg 13.5 ± 6.3 11.3 ± 4.6 19.8 0.018 0.449 (0.106, 0.697) -7.3 (-59.2) 11.8 (95.2)
δ-Tocopherol mg 3.4 ± 1.6 2.7 ± 1.4 23.1 0.003 0.706 (0.464, 0.850) -1.5 (-49.1) 2.8 (90.6)
Vitamin K μg 372.7 ± 193.3 390.9 ± 199.5 -4.7 0.359 0.920 (0.837, 0.962) -228.5 (-59.8) 192.0 (50.3)
Vitamin B1 mg 1.2 ± 0.5 1.3 ± 0.5 -5.3 0.177 0.912 (0.822, 0.958) -0.6 (-47.9) 0.5 (37.0)
Vitamin B2 mg 1.4 ± 0.4 1.4 ± 0.4 -4.0 0.078 0.940 (0.877, 0.971) -0.4 (-28.0) 0.3 (19.8)
Niacin mg 22.0 ± 7.3 22.4 ± 6.9 -1.8 0.653 0.669 (0.407, 0.829) -9.7 (-43.6) 8.9 (40.1)
Niacin equivalent mg 38.1 ± 9.7 39.2 ± 9.4 -2.7 0.327 0.775 (0.575, 0.887) -12.5 (-32.5) 10.4 (27.0)
Vitamin B6 mg 1.6 ± 0.4 1.6 ± 0.5 -2.1 0.508 0.734 (0.508, 0.865) -0.9 (-56.2) 0.2 (13.0)
Vitamin B12 μg 6.6 ± 5.2 6.1 ± 4.2 8.4 0.245 0.903 (0.804, 0.953) -4.2 (-65.1) 5.2 (81.3)
Folate μg 377.0 ± 115.1 377.4 ± 84.6 -0.1 0.981 0.797 (0.613, 0.899) -151.6 (-40.2) 150.9 (40.0)
Pantothenic acid mg 7.2 ± 1.7 7.6 ± 1.6 -4.7 0.057 0.820 (0.652, 0.911) -2.3 (-31.2) 1.6 (21.4)
Vitamin C mg 103.5 ± 51.5 111.7 ± 52.8 -7.3 0.173 0.883 (0.767, 0.943) -70.9 (-65.9) 54.6 (50.7)
Fatty acid, saturated g 18.6 ± 7.5 19.2 ± 8.2 -3.1 0.495 0.851 (0.708, 0.927) -9.7 (-51.4) 8.5 (45.2)
Fatty acid, monounsaturated g 25.4 ± 10.7 26.1 ± 11.3 -2.4 0.562 0.805 (0.626, 0.903) -12.2 (-47.4) 10.9 (42.5)
Fatty acid, polyunsaturated g 15.7 ± 5.8 14.5 ± 4.3 8.2 0.119 0.640 (0.364, 0.813) -6.8 (-45.1) 9.2 (60.9)
Cholesterol mg 397.7 ± 219.2 397.9 ± 198.2 -0.1 0.987 0.909 (0.816, 0.956) -149.6 (-37.6) 149.1 (37.5)
Dietary fiber, soluble g 4.1 ± 1.3 4.3 ± 1.3 -5.2 0.249 0.748 (0.531, 0.873) -2.3 (-53.8) 1.8 (43.2)
Dietary fiber, insoluble g 13.6 ± 5.6 14.2 ± 4.3 -4.3 0.332 0.797 (0.613, 0.899) -7.3 (-52.5) 6.1 (43.6)
Dietary fiber, total g 18.5 ± 6.9 19.0 ± 5.4 -3.1 0.484 0.715 (0.478, 0.855) -9.5 (-50.5) 8.3 (44.3)
Salt equivalentsd g 11.6 ± 2.8 11.7 ± 3.7 -1.5 0.772 0.583 (0.282, 0.780) -6.7 (-57.8) 6.4 (54.8)
  1. SD standard deviation, CI confidence interval
  2. aPersentage of mean difference between 24hR-camera and WFR (calculated as: % of the difference = ((mean nutrient from 24hR-camera—mean nutrient from WFR)/ mean nutrient from WFR)*100)
  3. bpaired t-test
  4. c95% linits of agreenment for the difference between 24hR-camera and WFR, in the corresponding units for each nutrient and percentage in parenthesis, show the range of under and over-estimation for the agreement between both methods
  5. See also Fig. 3
  6. dsodium (mg) = salt equivalents (g) × 1000 ÷ 2.54