OBJECTIVE: To investigate the accuracy of children's dietary recalls of school breakfast and school lunch validated with observations and obtained during in-person versus telephone interviews. DESIGN: Each child was observed eating school breakfast and school lunch and was interviewed that evening about that day's intake. SETTING: Ten elementary schools. PARTICIPANTS: A sample of fourth-graders was randomly selected within race (black, white) and gender strata, observed, and interviewed in person (n = 33) or by telephone (n = 36). MAIN OUTCOMES MEASURED: Rates for omissions (items observed but not reported) and intrusions (items reported but not observed) were calculated to determine accuracy for reporting items. A measure of total inaccuracy was calculated to determine inaccuracy for reporting items and amounts combined. ANALYSIS: Analysis of variance; chi-square. RESULTS: Interview type (in person, telephone) did not significantly affect recall accuracy. For omission rate, intrusion rate, and total inaccuracy, means were 34%, 19%, and 4.6 servings for in-person recalls and 32%, 16%, and 4.3 servings for telephone recalls of school breakfast and school lunch. CONCLUSIONS AND IMPLICATIONS: The accuracy of children's recalls of school breakfast and school lunch is not significantly different whether obtained in person or by telephone. Whether interviewed in person or by telephone, children reported only 67% of items observed; furthermore, 17% of items reported were not observed.
OBJECTIVE: To investigate the accuracy of children's dietary recalls of school breakfast and school lunch validated with observations and obtained during in-person versus telephone interviews. DESIGN: Each child was observed eating school breakfast and school lunch and was interviewed that evening about that day's intake. SETTING: Ten elementary schools. PARTICIPANTS: A sample of fourth-graders was randomly selected within race (black, white) and gender strata, observed, and interviewed in person (n = 33) or by telephone (n = 36). MAIN OUTCOMES MEASURED: Rates for omissions (items observed but not reported) and intrusions (items reported but not observed) were calculated to determine accuracy for reporting items. A measure of total inaccuracy was calculated to determine inaccuracy for reporting items and amounts combined. ANALYSIS: Analysis of variance; chi-square. RESULTS: Interview type (in person, telephone) did not significantly affect recall accuracy. For omission rate, intrusion rate, and total inaccuracy, means were 34%, 19%, and 4.6 servings for in-personrecalls and 32%, 16%, and 4.3 servings for telephone recalls of school breakfast and school lunch. CONCLUSIONS AND IMPLICATIONS: The accuracy of children's recalls of school breakfast and school lunch is not significantly different whether obtained in person or by telephone. Whether interviewed in person or by telephone, children reported only 67% of items observed; furthermore, 17% of items reported were not observed.
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