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J Gerontol A Biol Sci Med Sci. 2010 Oct;65(10):1107-14. doi: 10.1093/gerona/glq100. Epub 2010 Jun 13.

Low mid-upper arm circumference, calf circumference, and body mass index and mortality in older persons.

Author information

1
Department of Health Sciences and the EMGO Institute for Health and Care Research, VU University Amsterdam, the Netherlands. hanneke.wijnhoven@falw.vu.nl

Abstract

BACKGROUND:

Low body mass index is a general measure of thinness. However, its measurement can be cumbersome in older persons and other simple anthropometric measures may be more strongly associated with mortality. Therefore, associations of low mid-upper arm circumference, calf circumference, and body mass index with mortality were examined in older persons.

METHODS:

Data of the Longitudinal Aging Study Amsterdam, a population-based cohort study in the Netherlands, were used. The present study included community-dwelling persons 65 years and older in 1992-1993 (n = 1,667), who were followed until 2007 for their vital status. Associations between anthropometric measures and 15-year mortality were examined by spline regression models and, below the nadir, Cox regression models, transforming all measures to sex-specific Z scores.

RESULTS:

Mortality rates were 599 of 826 (73%) in men and 479 of 841 (57%) in women. Below the nadir, the hazard ratio of mortality per 1 standard deviation lower mid-upper arm circumference was 1.79 (95% confidence interval, 1.48-2.16) in men and 2.26 (1.71-3.00) in women. For calf circumference, the hazard ratio was 1.45 (1.22-1.71) in men and 1.30 (1.15-1.48) in women and for body mass index 1.38 (1.17-1.61) in men and 1.56 (1.10-2.21) in women. Excluding deaths within the first 3 years after baseline did not change these associations. Excluding those with a smoking history, obstructive lung disease, or cancer attenuated the associations of calf circumference (men) and body mass index (women).

CONCLUSIONS:

Based on the stronger association with mortality and given a more easy assessment in older persons, mid-upper arm circumference seems a more feasible and valid anthropometric measure of thinness than body mass index in older men and women.

PMID:
20547497
PMCID:
PMC3304296
DOI:
10.1093/gerona/glq100
[Indexed for MEDLINE]
Free PMC Article
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