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Body mass index relates weight to height differently in women and older adults: serial cross-sectional surveys in England (1992–2011)

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Matthew Sperrin, Alan David Marshall, Vanessa Higgins, Andrew Renehan, Iain E. Buchan


Body mass index (BMI) tends to be higher among shorter adults, especially women. The dependence of BMI–height correlation on age and calendar time may inform us about temporal determinants of BMI.

Series of cross-sectional surveys: Health Survey for England, 1992–2011. We study the Benn Index, which is the coefficient in a regression of log(weight) on log(height). This is adjusted for age, gender and calendar time, allowing for non-linear terms and interactions.

By height quartile, mean BMI decreased with increasing height, more so in women than in men (P < 0.001). The decrease in mean BMI in the tallest compared with the shortest height quartile was 0.77 in men (95% CI 0.69, 0.86) and 1.98 in women (95% CI 1.89, 2.08). Regression analysis of log(weight) on log(height) revealed that the inverse association between BMI and height was more pronounced in older adults and stronger in women than in men, with little change over calendar time.

Unlike early childhood, where taller children tend to have higher BMI, adults, especially women and older people, show an inverse BMI–height association. BMI is a heterogeneous measure of weight-for-height; height may be an important and complex determinant of BMI trajectory over the life course.


Original languageEnglish
Pages (from-to)607-613
Number of pages7
JournalJournal of Public Health
Issue number3
Early online date1 Jun 2015
Publication statusPublished - 17 Sep 2016

    Research areas

  • Adiposity, Body height, Body mass index, Body weight, Health survey for England, Stature, Weight for height

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