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. 2019 Apr 22;149(6):1019–1026. doi: 10.1093/jn/nxz013

TABLE 5.

Mean amounts truly consumed and reported by food and beverage among school-age children (n = 82)1

Mean amount, g
Food or beverage2 Number of children who truly consumed the item True (SE) Reported (SE) Difference between true and reported (SE)3
Pizza 100 99.0 (1.7) 104 (10.7) −5.0 (10.5)
Dip 90 9.8 (1.2) 7.7 (2.0) 2.0 (2.2)
Cookie 98 37.2 (1.2) 17.3 (2.5) 19.7 (2.6)*
Yogurt 84 41.9 (4.2) 51.8 (8.8) −9.9 (8.5)
Water 20 236 (38.5) 280 (50.3) −43.9 (85.3)
Milk 35 250 (0.8) 183 (53.6) 67.3 (53.8)
Juice 40 182 (7.4) 56.7 (14.7) 126 (14.7)*

1Portion size analyses excluded the children who did not report any lunch items (n = 12) and the children who only reported lunch items that were not similar to those served (n = 6), resulting in a final analytic sample of 82 children. ASA24, Automated Self-Administered 24-Hour Dietary Assessment Tool.

2Carrots were excluded from these analyses because there was no standardization of the weight of carrots offered.

3Values are mean differences between true and reported intakes ± SEs, n = 82. Mean differences reported were estimated with a paired 2-tailed t test. Values with an asterisk (*) were statistically significant at P < 0.05.