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The Relationship Between Body Mass Index and Waist Circumference: Implications for Estimates of the Population Prevalence of OverweightKey Points- The purpose of this study was to determine the relationships of both measured and self-reported BMI with measured waist circumference in a random selected sample of adults.
- Obesity is a risk factor for developing medical problems.
- To best obtain an estimate of adiposity and obesity, it is best to measure the waist circumference rather than calculate a self-reported BMI using height and weight.
Complete Reference: Booth ML, Hunter C, et al. The relationship between body mass index and waist circumference: implications for estimates of the population prevalence of overweight. Int J Obes Relat Metab Disord 2000;24(8):1058-61.
Paragraph Summary:
Booth et al (2000) took a random sample of 1140 Australian adults from a cross-sectional survey to determine relationships of both measured and self-reported BMI with measured waist circumference. The results of this study found that if waist circumference is used as the criterion, the prevalence of those overweight may be significantly greater than indicated by surveys relying on self-reported weight and height.
Introduction:
- Obesity is a risk factor for developing medical problems.
- The World Health Organization has determined obesity to be a health problem of epidemic proportions.
- Elevated BMI is a risk factor for many diseases; adiposity in the abdominal region is more strongly associated with metabolic disturbances thought to underlie many obesity-related conditions.
- The purpose of this study was to determine the relationships of both measured and self-reported BMI with measured waist circumference in a random selected sample of adults.
Conclusion:
- If waist circumference is used as the criterion, the prevalence of those overweight may be significantly greater than indicated by surveys relying on self-reported weight and height.
Clinical Limitations:
- Because the subjects were from one Australian city, there might be a difference in fat deposit across different cultures.
Scientific Limitations:
- No description about who measured waist circumference - whether it was one data collector or many.
- The authors state the selection methods are described elsewhere in greater detail.
- No discussion on how the subjects were recruited and how the randomization occurred.
- Standard survey limitations, i.e., response rate, etc.
Clinical Applications:
- To best obtain an estimate of adiposity and obesity, it is best to measure the waist circumference rather than calculate a self-reported BMI using height and weight.
- Do not just rely on height and weight self-report measures for BMI. Take your own measures of that subject.
Methodology:
- Cross-sectional survey with self-reported and laboratory measures of adiposity.
- Self-reported height and weight, as well as measured waist-to-hip ratio were taken from the Pilot Survey of the Fitness of Australians Database.
- To meet the inclusion criteria for this study, subjects had to have a BMI =25kg and excess abdominal adiposity =94 cm for men and =80 cm for women.
- 1140 randomly selected adults from ages 18-78 years.
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