Energy intake, energy required and mortality in an older population

Lee, Paul H. and Chan, Choi Wan (2016) Energy intake, energy required and mortality in an older population. Public Health Nutrition, 19 (17), 3178-3184. (doi:10.1017/S1368980016001750).

Abstract

Objectives The present study evaluated the association between energy intake, energy required and mortality in older adults. Design A cohort study with a mean of 10·67 (sd 4·74) years of follow-up. Participants completed a 24 h dietary recall. Energy required per day was computed by BMR. Deaths through 2006 were identified from the National Death Index. A Cox regression was used to estimate the hazard ratios (HR) of quantiles of energy intake and energy required on all-cause and CVD mortality, adjusting for demographics, socio-economic status and co-morbidity. Setting The National Health and Nutrition Examination Survey (NHANES) III, 1988-1994. Subjects A total of 4846 participants aged 60 years or above were analysed. Results Within the follow-up period, there were a total of 2954 deaths (61·0 %), 51·9 % were caused by CVD. Relative to those in quartile 1 of energy intake, only quartile 4 was associated with all-cause mortality and CVD mortality with HR of 0·86 (95 % CI 0·77, 0·96, P=0·006) and 0·76 (95 % CI 0·65, 0·89, P=0·001), respectively. On the other hand, relative to those in quartile 1 of energy required, all quartiles of participants had a lower risk of all-cause mortality and CVD mortality. The interaction effects between energy intake and energy required with all-cause and CVD mortality were insignificant (P=0·70 and 0·61, respectively). Conclusions Independent of energy required, higher energy intake was associated with lower HR of both all-cause and CVD mortality in older adults.

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Contributors

Author: Paul H. Lee

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