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|Title:||How valid are self-reported height and weight? A comparison between CATI self-report and clinic measurements using a large cohort study|
|Citation:||Australian and New Zealand Journal of Public Health, 2006; 30(3):238-246|
|Publisher:||Public Health Assoc Australia Inc|
|Anne W. Taylor, Eleonora Dal Grande, Tiffany K. Gill, Catherine R. Chittleborough, David H. Wilson, Robert J. Adams, Janet F. Grant, Patrick Phillips, Sarah Appleton and Richard E. Ruffin|
|Abstract:||OBJECTIVE: To examine the relationship between self-reported and clinical measurements for height and weight in adults aged 18 years and over and to determine the bias associated with using household telephone surveys. METHOD: A representative population sample of adults aged 18 years and over living in the north-west region of Adelaide (n=1,537) were recruited to the biomedical cohort study in 2002/03. A computerassisted telephone interviewing (CATI) system was used to collect self-reported height and weight. Clinical measures were obtained when the cohort study participants attended a clinic for biomedical tests. RESULT: Adults over-estimated their height (by 1.4 cm) and under-estimated their weight (by 1.7 kg). Using the self-report figures the prevalence of overweight/ obese was 56.0% but this prevalence estimate increased to 65.3% when clinical measurements were used. The discrepancy in self-reported height and weight is partly explained by 1) a rounding effect (rounding height and weight to the nearest 0 or 5) and 2) older persons (65+ years) considerably over-estimating their height. CONCLUSION: Self-report is important in monitoring overweight and obesity; however, it must be recognised that prevalence estimates obtained are likely to understate the problem. Implications: The public health focus on obesity is warranted, but self-report estimates, commonly used to highlight the obesity epidemic, are likely to be underestimations. Self-report would be a more reliable measure if people did not round their measurements and if older persons more accurately knew their height.|
|Keywords:||Humans; Obesity; Body Weight; Anthropometry; Body Mass Index; Body Height; Self Care; Health Care Surveys; Sensitivity and Specificity; Cohort Studies; Reproducibility of Results; Age Factors; Sex Factors; Socioeconomic Factors; Adolescent; Adult; Aged; Middle Aged; Female; Male|
|Description:||The definitive version is available at www.blackwell-synergy.com|
|Appears in Collections:||Public Health publications|
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