Causes, mortality rates and risk factors of death in community-dwelling Europeans aged 50 years and over: Results from the Survey of Health, Ageing and Retirement in Europe 2013-2015

Abstract

Objective: To determine mortality rates and to rank the causes and predictors of mortality using a wide range of sociodemographic and clinical variables. Materials and Methods: It is a prospective population-based cohort study of adults living in the community, 2013-15 (N = 48,691, age ≥50; deceased = 1,944). Clinical and sociodemographic data were obtained from the Survey of Health, Ageing and Retirement in Europe (SHARE): Age, Gender, Marital Status, Years of Schooling, Income, Loneliness, Cognition, Self-Rated Health, Diseases, Activities of daily living (ADL), Frailty and Mobility. Mortality rates were calculated. A Cox proportional hazards model were used to determine risk-adjusted mortality ratios with confidence intervals (99% CI). Results: The crude mortality rate was 18.39 (1000 person-years at risk), (99% CI, 18.37-18.42). The factors most associated with an increased mortality risk were older age, lower self-rated health, lower cognition, male gender, ADL deficits, higher comorbidity, frailty and loneliness. The diseases with a higher mortality risk were: cancer (Hazard ratio, HR = 2.67), dementia (HR = 2.19), depressive symptoms (HR = 2.10), fractures (hip, femur) (HR = 1.57), stroke (HR = 1.55), chronic lung disease (HR = 1.52), diabetes (HR = 1.36) and heart attack (HR = 1.21). Conclusions: The main mortality risk factors, associated independently in the eight diseases were: older age, poor self-rated health, ADL deficits, male gender, lower cognition, comorbidity and the presence of depressive symptoms. The need to evaluate and treat the depressive symptoms that accompanies diseases with higher risk of mortality is stressed.