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....
| Những tác giả chính: | , , , |
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| Định dạng: | Journal article |
| Ngôn ngữ: | English |
| Được phát hành: |
2002
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| _version_ | 1826293919016550400 |
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| author | Spencer, E Appleby, P Davey, G Key, T |
| author_facet | 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 eight hundred and eight British men and women aged 35-76 years. RESULTS: Spearman 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 | 2024-03-07T03:37:36Z |
| format | Journal article |
| id | oxford-uuid:bcd058b5-7ddf-41df-8b37-71f1ff1f793e |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:37:36Z |
| publishDate | 2002 |
| record_format | dspace |
| spelling | oxford-uuid:bcd058b5-7ddf-41df-8b37-71f1ff1f793e2022-03-27T05:27:12ZValidity of self-reported height and weight in 4808 EPIC-Oxford participants.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:bcd058b5-7ddf-41df-8b37-71f1ff1f793eEnglishSymplectic Elements at Oxford2002Spencer, EAppleby, PDavey, GKey, T 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 eight hundred and eight British men and women aged 35-76 years. RESULTS: Spearman 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 | 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 |
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