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Table 3 Reproducibility of estimates based on a food-photographic record between two independent analysts

From: Development and validation of nutrient estimates based on a food-photographic record in Japan

  Analyst 1 Analyst 2 Correlation
median (IQR) median (IQR) coefficienta
Portion size, g 81.5 (30.0, 184.5) 83.0 (30.0196.6) 0.95
Energy, kcal 78.0 (22.5, 184) 79.5 (24.0, 199.5) 0.96
Protein, g 3.9 (1.5, 8.6) 4.1 (1.5, 9.3) 0.95
Fat, g 2.8 (0.6, 7.7) 2.8 (0.6, 8.3) 0.97
 Triglyceride, g 2.8 (0.6, 7.5) 3.1 (0.6, 8.2) 0.97
 SFA, g 0.5 (0.1, 1.7) 0.6 (0.1, 1.9) 0.98
 MUFA, g 0.9 (0.1, 2.9) 0.9 (0.1, 3.3) 0.97
 PUFA, g 0.8 (0.1, 2.3) 0.8 (0.1, 2.5) 0.97
 Cholesterol, mg 22.0 (6.0, 53.1) 24.0 (6.0, 64.9) 0.96
Carbohydrate, g 5.6 (2.1, 18.2) 5.7 (2.1, 18.4) 0.97
Total dietary fiber, g 1.1 (0.5, 2.0) 1.1 (0.5, 2.2) 0.96
 Water soluble, g 0.2 (0.1, 0.5) 0.3 (0.1, 0.5) 0.97
 Water insoluble, g 0.8 (0.3, 1.6) 0.8 (0.4, 1.6) 0.97
Sodium, mg 303.0 (160.0, 494.0) 311.7 (170.0, 546.7) 0.92
Potassium, mg 150.5 (62.3, 298.2) 152.1 (65.3, 302.3) 0.95
Calcium, mg 23.4 (8.9, 44.0) 24.0 (9.0, 46.8) 0.94
Magnesium, mg 15.3 (6.8, 27.0) 16.1 (7.0, 30.8) 0.93
Phosphorus, mg 65.8 (26.0, 123.0) 67.1 (28.0, 138.0) 0.94
Iron, mg 0.5 (0.2, 0.9) 0.6 (0.2, 1.0) 0.93
Zinc, mg 0.4 (0.1, 0.9) 0.4 (0.1, 1.0) 0.95
Copper, mg 0.05 (0.01, 0.12) 0.06 (0.01, 0.12) 0.95
Manganese, mg 0.09 (0.02, 0.26) 0.10 (0.02, 0.28) 0.97
Iodine, μg 2.1 (0.6, 8.0) 2.1 (0.6, 8.7) 0.98
Selenium, μg 2.2 (0.9, 8.1) 2.2 (0.9, 9.9) 0.97
Chromium, μg 0.5 (0.2, 0.9) 0.6 (0.2, 1.2) 0.97
Molybdenum, μg 6.4 (2.5, 17.5) 6.5 (2.9, 17.5) 0.97
Retinol, μg 13.5 (2.5, 35.0) 16.8 (2.5, 42.5) 0.97
α-carotene, μg 112.0 (1.1, 280.0) 125.0 (1.1, 375.2) 0.99
β-carotene, μg 95.8 (14.2, 770.0) 111.3 (12.6, 771.6) 0.97
Cryptoxanthin, μg 4.5 (1.0, 11.7) 4.9 (1.5, 13.6) 0.96
Vitamin D, μg 0.3 (0.2, 0.8) 0.4 (0.2, 0.9) 0.94
α-tocopherol, mg 0.3 (0.1, 0.9) 0.3 (0.1, 0.9) 0.94
β-tocopherol, mg 0.06 (0.03, 0.09) 0.06 (0.03, 0.10) 0.97
γ-tocopherol, mg 0.9 (0.1, 2.7) 0.9 (0.2, 2.9) 0.97
δ-tocopherol, mg 0.4 (0.2, 0.8) 0.5 (0.2, 0.8) 0.98
Vitamin K, μg 12.0 (3.8, 25.2) 12.7 (3.8, 29.9) 0.96
Vitamin B1, mg 0.05 (0.02, 0.10) 0.05 (0.02, 0.10) 0.95
Vitamin B2, mg 0.05 (0.02, 0.13) 0.05 (0.02, 0.14) 0.94
Niacin, mg 0.8 (0.2, 2.1) 0.8 (0.2, 2.4) 0.94
Vitamin B6, mg 0.06 (0.02, 0.14) 0.06 (0.02, 0.15) 0.95
Vitamin B12, μg 0.3 (0.2, 0.7) 0.4 (0.2, 0.7) 0.94
Folate, μg 17.0 (5.9, 32.0) 18.0 (6.3, 34.8) 0.96
Pantothenic acid, mg 0.28 (0.08, 0.60) 0.29 (0.08, 0.73) 0.96
Biotin, μg 2.3 (1.2, 4.3) 2.5 (1.3, 4.6) 0.96
Vitamin C, mg 5.4 (2.1, 12.5) 6.0 (2.2, 14.0) 0.98
  1. SFA Saturated fatty acid, MUFA Monounsaturated fatty acid, PUFA Polyunsaturated fatty acid
  2. aSpearman’s rank correlation coefficient