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J Gen Intern Med. 2001 Aug;16(8):538-43.

Extent and determinants of discrepancy between self-evaluations of weight status and clinical standards.

Author information

  • 1Section of General Medicine, Department of Medicine, University of Chicago, IL 60637, USA. vchang1@midway.uchicago.edu

Abstract

OBJECTIVES:

To examine the extent and type of discordance between personal and medical classifications of weight status, and to examine the influence of sociodemographic factors on the misclassification of weight status.

DESIGN/SETTING:

The 1991 Health Promotion and Disease Prevention Supplement of the National Health Interview Survey, a nationally representative, cross-sectional survey of the U.S. population.

PARTICIPANTS:

Adults 18 years and older (N = 41,676).

MEASUREMENTS AND MAIN RESULTS:

Respondents' self-evaluations of weight status were compared to classification of their body mass index (BMI) by medical standards. Twenty-nine percent of respondents incorrectly classified their weight status relative to medical standards, and the nature of this error was variable. While 27.4% of overweight persons judged their weight to be "just about right," of those who did judge themselves to be overweight, 23.9% were in fact normal or underweight according to their BMI. Overall, 16.6% of persons underassessed their weight category, and 12.4% overassessed their weight category. Multivariate analysis revealed that sex, age, race, income, education, and occupation influenced the misclassification of weight status.

CONCLUSIONS:

A substantial proportion of Americans deviate from medical standards in their self-evaluations of weight appropriateness, and this lack of correspondence may reflect the normative judgments of various population subgroups. Clinical and public health programs that employ a uniform strategy or approach to the population may not be efficacious.

PMID:
11556930
[PubMed - indexed for MEDLINE]
PMCID:
PMC1495251
Free PMC Article
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