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Single measure Intraclass correlation coefficients and 95% confidence intervals for food variety and servings |
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| Variety (number of types)1 |
Servings (number of servings) |
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| Reliability (95% CI) |
Validity (95% CI) |
Reliability (95% CI) |
Validity (95% CI) |
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|
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| Fresh fruit |
0.37 (0.09–0.59) |
0.54 (0.37–0.68) |
0.22 (-0.07 – 0.48) |
0.39 (0.20–0.56) |
| Canned fruit |
0.81 (0.68–0.89) |
0.66 (0.51–0.76) |
0.84 (0.72 – 0.91) |
0.68 (0.55–0.78) |
| Frozen fruit |
0.85 (0.75–0.92) |
0.71 (0.59–0.81) |
0.91 (0.84 – 0.95) |
0.83 (0.76–0.89) |
| Dried fruit |
0.89 (0.81–0.94) |
0.88 (0.82–0.92) |
0.39 (0.11 – 0.61) |
0.67 (0.53–0.77) |
| Fresh vegetables |
0.81 (0.70–0.90) |
0.70 (0.57–0.80) |
0.77 (0.62 – 0.87) |
0.30 (0.09–0.48) |
| Canned vegetables |
0.89 (0.81–0.94) |
0.70 (0.57–0.79) |
0.81 (0.68 – 0.89) |
0.68 (0.54–0.78) |
| Frozen vegetables |
0.83 (0.71–0.90) |
0.82 (0.73–0.88) |
0.63 (0.42 – 0.78) |
0.74 (0.63–0.83) |
| Salty/savory snacks |
0.85 (0.75–0.92) |
0.48 (0.29–0.63) |
0.71 (0.53 – 0.83) |
0.46 (0.28–0.61) |
| Sweet snacks |
0.65 (0.44–0.77) |
0.30 (0.09–0.49) |
0.64 (0.42 – 0.78) |
0.32 (0.12–0.50) |
| Candy |
-2 |
-2 |
0.49 (0.23 – 0.68) |
0.64 (0.50–0.75) |
| Soda |
0.77 (0.62–0.87) |
0.76 (0.65–0.85) |
0.69 (0.50 – 0.82) |
0.66 (0.53–0.77) |
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1Calculated from average serving size for each item; 2Variety of candy not calculated | ||||
Bryant et al. International Journal of Behavioral Nutrition and Physical Activity 2008 5:23 doi:10.1186/1479-5868-5-23 |
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