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Ann Epidemiol. 2012 Oct;22(10):744-6. doi: 10.1016/j.annepidem.2012.06.106. Epub 2012 Aug 3.

Validation of recall of body weight over a 26-year period in cohort members of the Adventist Health Study 2.

Author information

1
Department of Epidemiology and Biostatistics, Loma Linda University, Loma Linda, CA 92350, USA.

Abstract

PURPOSE:

The validity of recall of past body weight has been measured and tends to be high; however, the paucity of validation data for recall in older age is noteworthy given the need for accounting for age and disease-related weight change in prospective studies.

METHODS:

The Adventist Health Study-2 (AHS-2) is a prospective, questionnaire-based study (n = 96,710) that enrolled a cohort from 2002 through 2007 to investigate the role of lifestyle exposures (diet, physical activity, anthropometrics) and health on outcomes such as cancer and mortality.

RESULTS:

The mean difference between current weight reported 26 years earlier in AHS-1 and recall of past body weight in AHS-2 was only 0.67 kg, indicating underestimation in the recall of past body weight from ages 30 to 70 years.

CONCLUSIONS:

Misclassification is differential across both age and adiposity, and this tendency needs to be incorporated into the interpretation of weight history and health outcome literature.

PMID:
22863312
PMCID:
PMC3459141
DOI:
10.1016/j.annepidem.2012.06.106
[Indexed for MEDLINE]
Free PMC Article

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