Validity of self-reported height and weight in 4808 EPIC-Oxford participants
Objective: To assess the validity of self-reported height and weight by comparison with measured height and weight in a sample of middle-aged men and women, and to determine the extent of misclassification of body mass index (BMI) arising from differences between self-reported and measured values. D...
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| Materialtyp: | Journal article |
| Språk: | English |
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Cambridge University Press
2002
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| _version_ | 1826263466236706816 |
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| author | Spencer, E Appleby, P Davey, G Key, T |
| author2 | Nutrition Society |
| author_facet | Nutrition Society Spencer, E Appleby, P Davey, G Key, T |
| author_sort | Spencer, E |
| collection | OXFORD |
| description | Objective: To assess the validity of self-reported height and weight by comparison with measured height and weight in a sample of middle-aged men and women, and to determine the extent of misclassification of body mass index (BMI) arising from differences between self-reported and measured values. Design: Analysis of self-reported and measured height and weight data from participants in the Oxford cohort of the European Prospective Investigation into Cancer and Nutrition (EPIC-Oxford). Subjects: Four thousand eigh hundred and eight British men and women aged 35-76 years. Results: Speaman rank correlations between self-reported and measured height, weight and BMI were high (r>0.9, P<0.0001). Height was overestimated by a mean of 1.23 (95% confidence interval (CI) 1.11-1.34) cm in men and 0.60 (0.51-0.70) cm in women; the extent of overestimation was greater in older men and women, shorter men and heavier women. Weight was underestimated by a mean of 1.85 (1.72-1.99) kg in men and 1.40 (1.31-1.49) kg in women; the extent of underestimation was greater in heavier men and women, but did not vary with age or height. Using standard categories of BMI, 22.4% of men and 18.0% of women were classified incorrectly based on self-reported height and weight. After correcting the self-reported values using predictive equations derived from a 10% sample of subjects, misclassification decreased to 15.2% in men and 13.8% in women. Conclusions: Self-reported height and weight data are valid for identifying relationships in epidemiological studies. In analyses where anthropometric factors are the primary variables of interest, measurements in a representative sample of the study population can be used to improve the accuracy of estimates of height, weight and BMI. |
| first_indexed | 2024-03-06T19:52:13Z |
| format | Journal article |
| id | oxford-uuid:2454d22b-8cf7-4c21-8af1-25d39a37378d |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:52:13Z |
| publishDate | 2002 |
| publisher | Cambridge University Press |
| record_format | dspace |
| spelling | oxford-uuid:2454d22b-8cf7-4c21-8af1-25d39a37378d2022-03-26T11:49:28ZValidity of self-reported height and weight in 4808 EPIC-Oxford participantsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:2454d22b-8cf7-4c21-8af1-25d39a37378dPublic HealthEnglishOxford University Research Archive - ValetCambridge University Press2002Spencer, EAppleby, PDavey, GKey, TNutrition SocietyObjective: To assess the validity of self-reported height and weight by comparison with measured height and weight in a sample of middle-aged men and women, and to determine the extent of misclassification of body mass index (BMI) arising from differences between self-reported and measured values. Design: Analysis of self-reported and measured height and weight data from participants in the Oxford cohort of the European Prospective Investigation into Cancer and Nutrition (EPIC-Oxford). Subjects: Four thousand eigh hundred and eight British men and women aged 35-76 years. Results: Speaman rank correlations between self-reported and measured height, weight and BMI were high (r>0.9, P<0.0001). Height was overestimated by a mean of 1.23 (95% confidence interval (CI) 1.11-1.34) cm in men and 0.60 (0.51-0.70) cm in women; the extent of overestimation was greater in older men and women, shorter men and heavier women. Weight was underestimated by a mean of 1.85 (1.72-1.99) kg in men and 1.40 (1.31-1.49) kg in women; the extent of underestimation was greater in heavier men and women, but did not vary with age or height. Using standard categories of BMI, 22.4% of men and 18.0% of women were classified incorrectly based on self-reported height and weight. After correcting the self-reported values using predictive equations derived from a 10% sample of subjects, misclassification decreased to 15.2% in men and 13.8% in women. Conclusions: Self-reported height and weight data are valid for identifying relationships in epidemiological studies. In analyses where anthropometric factors are the primary variables of interest, measurements in a representative sample of the study population can be used to improve the accuracy of estimates of height, weight and BMI. |
| spellingShingle | Public Health Spencer, E Appleby, P Davey, G Key, T Validity of self-reported height and weight in 4808 EPIC-Oxford participants |
| title | Validity of self-reported height and weight in 4808 EPIC-Oxford participants |
| title_full | Validity of self-reported height and weight in 4808 EPIC-Oxford participants |
| title_fullStr | Validity of self-reported height and weight in 4808 EPIC-Oxford participants |
| title_full_unstemmed | Validity of self-reported height and weight in 4808 EPIC-Oxford participants |
| title_short | Validity of self-reported height and weight in 4808 EPIC-Oxford participants |
| title_sort | validity of self reported height and weight in 4808 epic oxford participants |
| topic | Public Health |
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