Nutritional Risk and 5-Year Mortality of Older Community-Dwelling Canadian Men: The Manitoba Follow-Up Study

Abstract

This study examines nutritional risk and 5-year mortality rates of community-dwelling older Canadian men participating in the Manitoba Follow-Up Study. The surviving cohort (n = 690; mean age = 86.8 years) was mailed a self-administered Nutrition Survey consisting of SCREEN II, a validated nutrition risk screening tool and health-related questions. Five hundred fifty-three completed surveys (80% completion rate) were returned, with 522 (94%) containing complete responses necessary to score nutritional risk, comprising the participants for this analysis. Forty-four percent of the 522 respondents were scored as high risk, 24% at moderate risk, and 32% at low risk. Over five years from 2007 to 2012, 212 (41%) of the men died, with 1-year, 2-year, 3-year, and 4-year survival rates of 92%, 86%, 77%, and 66%, respectively. Men in the lowest 40th percentile of the nutritional risk distribution accounted for half of all deaths. Adjusted for other characteristics, Cox proportional hazard models demonstrated that with each unit decline on the nutritional risk scale there was a 4% greater risk of mortality (hazard ratio = 0.96 [95% CI 0.94,0.98]). Early identification of older men at nutritional risk and timely nutrition interventions are essential in delaying the progression of morbidity and mortality.