Table 1.
Intraclass correlation coefficients (ICC) and the ratio of within- to between-person variance (Rw/b) for daily intakes of unadjusted- and adjusted-nutrients (data provided by 131 residents in Japan)*.
| Nutrients | Meane | SDf | Unadjusted | Adjustedg | ||
|---|---|---|---|---|---|---|
| ICCa,b (95%CIc) | Rw/bd | ICC (95%CI) | Rw/b | |||
| Energy/kcal | 1846 | 354 | 0.49 (0.42, 0.55) | 1.0 | ||
| Protein/g | 69.9 | 15.0 | 0.45 (0.38, 0.52) | 1.2 | 0.30 (0.24, 0.36) | 2.3 |
| Lipid/g | 56.5 | 15.9 | 0.37 (0.31, 0.44) | 1.7 | 0.29 (0.24, 0.36) | 2.4 |
| SFAh/g | 15.65 | 4.99 | 0.34 (0.28, 0.41) | 1.9 | 0.31 (0.25, 0.38) | 2.2 |
| MUSFAi/g | 20.51 | 6.52 | 0.34 (0.28, 0.41) | 1.9 | 0.27 (0.22, 0.34) | 2.7 |
| PUFAj/g | 12.34 | 3.31 | 0.28 (0.22, 0.35) | 2.6 | 0.14 (0.10, 0.19) | 6.1 |
| n-3PUFA/g | 2.3 | 0.9 | 0.23 (0.17, 0.29) | 3.3 | 0.13 (0.09, 0.18) | 6.7 |
| n-6PUFA/g | 9.9 | 2.7 | 0.26 (0.20, 0.32) | 2.8 | 0.14 (0.10, 0.19) | 6.1 |
| Cholesterol/mg | 322 | 107 | 0.28 (0.22, 0.34) | 2.6 | 0.12 (0.09, 0.18) | 7.3 |
| Carbohydrate/g | 247 | 49 | 0.47 (0.40, 0.54) | 1.1 | 0.38 (0.31, 0.45) | 1.6 |
| Total fiber/g | 15.4 | 4.8 | 0.50 (0.43, 0.57) | 1.0 | 0.49 (0.42, 0.56) | 1.0 |
| Soluble fiber/g | 3.4 | 1.2 | 0.38(0.32, 0.45) | 1.6 | 0.35 (0.29, 0.42) | 1.9 |
| Insoluble fiber/g | 11.3 | 3.5 | 0.50 (0.43, 0.56) | 1.0 | 0.48 (0.41, 0.55) | 1.1 |
| Vitamin A/μg REk | 561 | 353 | 0.05 (0.03, 0.09) | 19.0 | 0.02 (0.01, 0.07) | 49.0 |
| Vitamin D/μg | 7.9 | 4.2 | 0.12 (0.08, 0.17) | 7.3 | 0.05 (0.03, 0.09) | 19.0 |
| alpha-Tocopherol/mg | 7.1 | 1.9 | 0.30 (0.24, 0.36) | 2.3 | 0.25 (0.19, 0.31) | 3.0 |
| Vitamin K/μg | 232 | 103 | 0.35 (0.28, 0.42) | 1.9 | 0.33 (0.26, 0.39) | 2.0 |
| Vitamin B1/mg | 0.94 | 0.21 | 0.21 (0.16, 0.27) | 3.8 | 0.13 (0.09, 0.18) | 6.7 |
| Vitamin B2/mg | 1.39 | 0.35 | 0.43 (0.37, 0.50) | 1.3 | 0.32 (0.26, 0.39) | 2.1 |
| Niacin/mg NEl | 30.9 | 7.2 | 0.42 (0.35, 0.49) | 1.4 | 0.22 (0.17, 0.28) | 3.5 |
| Vitamin B6/mg | 1.34 | 0.4 | 0.48 (0.42, 0.55) | 1.1 | 0.40 (0.33, 0.47) | 1.5 |
| Vitamin B12/μg | 6.5 | 3.3 | 0.14 (0.10, 0.19) | 6.1 | 0.06 (0.04, 0.10) | 15.7 |
| Folate/μg | 410 | 128 | 0.42 (0.35, 0.49) | 1.4 | 0.35 (0.29, 0.42) | 1.9 |
| Pantothenic acid/mg | 6.08 | 1.39 | 0.45 (0.39, 0.52) | 1.2 | 0.33 (0.26, 0.39) | 2.0 |
| Vitamin C/mg | 143 | 55 | 0.46 (0.39, 0.53) | 1.2 | 0.41 (0.34, 0.48) | 1.4 |
| Sodium/mg | 3624 | 856 | 0.34 (0.27, 0.40) | 1.9 | 0.23 (0.17, 0.29) | 3.3 |
| Salt-Eq/g | 9.1 | 2.2 | 0.33 (0.27, 0.40) | 2.0 | 0.23 (0.17, 0.29) | 3.3 |
| Potassium/mg | 2794 | 732 | 0.55 (0.48, 0.62) | 0.8 | 0.52 (0.45, 0.59) | 0.9 |
| Calcium/mg | 538 | 164 | 0.39 (0.33, 0.46) | 1.6 | 0.35 (0.29, 0.42) | 1.9 |
| Magnesium/mg | 278 | 67 | 0.38 (0.32, 0.45) | 1.6 | 0.28 (0.22, 0.35) | 2.6 |
| Phosphorus/mg | 1035 | 232 | 0.49 (0.42, 0.56) | 1.0 | 0.38 (0.32, 0.45) | 1.6 |
| Iron/mg | 8.7 | 2.3 | 0.44 (0.38, 0.51) | 1.3 | 0.36 (0.30, 0.43) | 1.8 |
| Selenium/μg | 62 | 18 | 0.19 (0.15, 0.25) | 4.3 | 0.07 (0.04, 0.11) | 13.3 |
| Zinc/mg | 1.2 | 0.3 | 0.33 (0.27, 0.40) | 2.0 | 0.17 (0.13, 0.23) | 4.9 |
| Cupper/mg | 4.35 | 1.29 | 0.44 (0.37, 0.51) | 1.3 | 0.28 (0.22, 0.35) | 2.6 |
| Manganese/mg | 1.29 | 1.62 | 0.53 (0.46, 0.60) | 0.9 | 0.47 (0.40, 0.54) | 1.1 |
| beta-carotene/μg | 3469 | 1696 | 0.28 (0.22, 0.35) | 2.6 | 0.25 (0.20, 0.31) | 3.0 |
| alpha-carotene/μg | 563 | 350 | 0.20 (0.15, 0.26) | 4.0 | 0.01 (0.00, 0.08) | 99.0 |
| beta-cryptoxanthin/μg | 528 | 443 | 0.13 (0.09, 0.18) | 6.7 | 0.07 (0.04, 0.11) | 13.3 |
* The data in this study were collected between 2014 and 2015 in Nagasaki Prefecture, Japan. The title of this study is Reliability of Repeated Measures of Nutrient Intake by Diet Records in Residents in the Western Region of Japan. a ICC: intraclass correlation coefficient. b Each of the 130 participants provided 12 diet records, and one submitted 11 records. Analysis was done using 1571 records. c CI: confidence interval. d Rw/b: σw2/σb2, the ratio of within- to between person variance. e Means of the total study population. f SD: standard deviation. g Adjustment by use of the residual model method. h SFA: saturated fatty acid. i MUFA: monounsaturated fatty acid. j PUFA: polyunsaturated fatty acid. k RE: retinol equivalent. l NE: niacin equivalent.