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Table 2 Mean difference and correlation coefficient of food intakes 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
Food category (g) Mean ± SD Mean ± SD Mean difference (%)a   Spearman
(95%CI)
01: Cereals 553.5 ± 139.5 589.5 ± 143.1 -6.1 0.053 0.783 (0.589, 0.892) -227.4 (-39.8) 155.6 (27.2)
02: Potatoes and Starches 54.3 ± 63.5 69.7 ± 92.5 -22.1 0.160 0.897 (0.793, 0.950) -130.2 (-210.1) 99.4 (160.3)
03: Sugars and Sweeteners 5.5 ± 7.1 4.6 ± 4.8 21.1 0.329 0.514 (0.189, 0.738) -9.4 (-187.1) 11.3 (225.2)
04: Pulses 63.1 ± 62.8 66.7 ± 63.4 -5.4 0.637 0.764 (0.557, 0.882) -84.7 (-130.5) 77.5 (119.4)
05: Nuts and Seeds 3.8 ± 12.1 3.9 ± 12.4 -2.2 0.891 0.719 (0.484, 0.857) -6.6 (-171.9) 6.4 (167.5)
06: Vegetables 336.2 ± 132.1 372.0 ± 111.7 -9.6 0.045 0.738 (0.515, 0.868) -218.8 (-61.8) 147.3 (41.6)
07: Fruits 77.6 ± 80.9 86.6 ± 83.4 -10.4 0.157 0.906 (0.810, 0.955) -75.5 (-92.0) 57.5 (70.0)
08: Mushrooms 29.8 ± 44.6 31.2 ± 35.3 -4.2 0.805 0.889 (0.778, 0.946) -58.0 (-190.2) 55.4 (181.6)
09: Algae 10.0 ± 12.8 6.4 ± 9.7 56.3 0.052 0.855 (0.715, 0.929) -15.5 (-188.6) 22.7 (276.5)
10: Fishes and Shellfishes 75.0 ± 57.3 81.3 ± 60.4 -7.7 0.317 0.852 (0.710, 0.928) -72.6 (-92.9) 60.0 (76.8)
11: Meats 96.6 ± 63.7 101.4 ± 64.5 -4.8 0.272 0.946 (0.889, 0.974) -51.2 (-51.7) 41.5 (41.9)
12:Eggs 53.5 ± 44.7 50.7 ± 37.4 5.5 0.429 0.865 (0.733, 0.934) -34.7 (-66.5) 40.3 (77.3)
13: Dairy Products 88.2 ± 101.7 101.6 ± 112.4 -13.2 0.053 0.970 (0.937, 0.986) -84.4 (-88.9) 57.6 (60.7)
14: Fats and oils 14.5 ± 10.4 12.8 ± 9.0 13.1 0.356 0.533 (0.214, 0.749) -17.5 (-128.7) 20.9 (153.4)
15: Confectioneries 18.3 ± 37.8 18.2 ± 38.4 0.6 0.871 0.969 (0.935, 0.985) -6.5 (-35.5) 6.7 (36.6)
16: Beverages 673.6 ± 382.8 661.3 ± 357.4 1.9 0.399 0.955 (0.907, 0.979) -142.1 (-21.3) 166.7 (25.0)
17: Seasonings and Spices 176.2 ± 135.3 153.3 ± 148.5 15.0 0.448 0.465 (0.126, 0.707) -297.1 (-180.3) 342.9 (208.1)
  1. SD standard deviation, CI confidence interval
  2. aPersentage of mean difference between 24hR-camera and WFR in each food category (calculated as: % of the difference = (mean amount from 24hR-camera—mean amount from WFR)/ mean amount 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 food group and percentage in parenthesis, show the range of under and over-estimation for the agreement between both methods
  5. See also Fig. 2