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Stram, Daniel O.; Hankin, Jean H.; Wilkens, Lynne R.; Pike, Malcolm C.; Monroe, Kristine R.; Park, Sohee; Henderson, Brian E.; Nomura, Abraham M.Y.; Earle, Maj E.; Nagamine, Faye S.; Kolonel, Laurence N.
American journal of epidemiology, 02/2000, Letnik: 151, Številka: 4Journal Article
The performance of the dietary questionnaire used in a multiethnic cohort study in Hawaii and Los Angeles was assessed in a calibration substudy that compared diet reported from the questionnaire with three 24-hour dietary recalls. For the calibration substudy, subjects from each of eight subgroups defined by sex and ethnic group (African-American, Japanese-American, Latino, and White) were chosen randomly from among the cohort members, and each participant's previous day's diet was assessed by telephone recall on three occasions over approximately 2 months. After completing the three 24-hour recalls, each calibration subject was sent a second questionnaire; 1,606 persons completed three recalls and a second questionnaire (127 to 267 per ethnic-sex group). This report describes correlation coefficients and calibration slopes for the relation between the 24-hour recalls and second questionnaire values for a selected set of macro- and micronutrients, as absolute intakes, nutrient densities, and calorie-adjusted nutrients. In all subgroups, estimates of the correlation between the questionnaire and 24-hour recalls were greater after energy adjustment (average correlations ranged from 0.57–0.74 for nutrient densities and from 0.55–0.74 for calorie-adjusted nutrients) than when absolute nutrient values were used (average range 0.26–0.57). For absolute nutrient intakes, the correlations were greatest for Whites, somewhat lower for Japanese-Americans and Latinos, and lowest for African-Americans. After energy adjustment, the difference between subgroups were diminished, and the correlations were generally highly satisfactory. Am J Epidemiol 2000;151:358–70.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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