Calibration of the Dietary Questionnaire for a Multiethnic Cohort in Hawaii and Los Angeles (original) (raw)

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Department of Preventive Medicine, School of Medicine, University of Southern California

Los Angeles, CA

Reprint requests to Dr. Daniel O. Stram, Department of Preventive Medicine, University of Southern California School of Medicine, CHP-220, Los Angeles, CA 90033–9987

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Cancer Etiology Program, Cancer Research Center of Hawaii, University of Hawaii

Honolulu, HI

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Cancer Etiology Program, Cancer Research Center of Hawaii, University of Hawaii

Honolulu, HI

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Department of Preventive Medicine, School of Medicine, University of Southern California

Los Angeles, CA

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Department of Preventive Medicine, School of Medicine, University of Southern California

Los Angeles, CA

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Department of Preventive Medicine, School of Medicine, University of Southern California

Los Angeles, CA

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Department of Preventive Medicine, School of Medicine, University of Southern California

Los Angeles, CA

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Cancer Etiology Program, Cancer Research Center of Hawaii, University of Hawaii

Honolulu, HI

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Cancer Etiology Program, Cancer Research Center of Hawaii, University of Hawaii

Honolulu, HI

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Cancer Etiology Program, Cancer Research Center of Hawaii, University of Hawaii

Honolulu, HI

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Accepted:

08 December 1998

Published:

15 February 2000

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Daniel O. Stram, Jean H. Hankin, Lynne R. Wilkens, Malcolm C. Pike, Kristine R. Monroe, Sohee Park, Brian E. Henderson, Abraham M.Y. Nomura, Maj E. Earle, Faye S. Nagamine, Laurence N. Kolonel, Calibration of the Dietary Questionnaire for a Multiethnic Cohort in Hawaii and Los Angeles, American Journal of Epidemiology, Volume 151, Issue 4, 15 February 2000, Pages 358–370, https://doi.org/10.1093/oxfordjournals.aje.a010214
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Abstract

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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© 2000 by The Johns Hopkins University School of Hygiene and Public Health

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