Predictors of 5 year Survival of Elderly with Hypertension. A Prospective Cohort Study

Abstract

Background: Given the high prevalence of hypertension in older adults, this study was conducted to identify the factors affecting the 5?year survival of older people with hypertension.

Materials and Methods: In this cohort study, individuals aged 60 and over living
in Amirkola, north of Iran who were diagnosed with hypertension were followed up for 5 years, and the effect of various factors on their survival was analyzed.

Results: Among 1439 older people, 892 individuals (61.99%) had hypertension. Age (adjusted hazard ratio [aHR] =1.052, 95% confidence interval [CI] =1.019–1.086, P = 0.002), diabetes mellitus (aHR = 2.166, 95% CI = 1.398–3.354, P = 0.001), serum creatinine (aHR = 2.163, 95% CI = 1.391–3.363, P = 0.001), female gender (aHR = 0.460, 95% CI = 0.276–0.766, P = 0.003), body mass index ?30 kg/m2 (aHR = 0.386, 95% CI = 0.212–0.701, P = 0.002), physical activity score >150 (aHR = 0.382, 95% CI = 0.162–0.898, P = 0.027), each one unit increase of social support score (aHR = 0.914, 95% CI = 0.861–0.970, P = 0.003), and instrumental functional ability score (aHR = 0.907, 95% CI = 0.843–0.974, P = 0.009) showed a significant effect on 5?year survival of older people.

Conclusion: Multiple factors (such as age, gender, social support, lifestyle  behaviors, and comorbidities including diabetes mellitus and renal function) might predict the 5?year survival of the elderly with hypertension. They should be considered in health?care package of these patients.