Relative Survival of Patients with Ischemic Stroke

Objective To estimate the relative survival ratio of patients with ischemic stroke and its risk factors. Methods Lifetable and Ederer Ⅱ methods were used to estimate the relative survival ratio of patients with ischemic stroke. The Poission error structure model was adopted to determine the risk factors associated with survival. Results The patients had 99%, 98%, 98% and 99% relative survival ratio 1 year, 3 years, 5 years and 7 years after stroke, respectively. The relative excess risk of death increased with age53-62 yr. vs. <53 yr., relative excess risk (RER=26.975, 95%CI:1.668-410.90, P=0.020 1, higher mRS scores (≥ 3 vs. <3 points, RER=14.700, 95%CI:1.05-206.45, P=0.047 3), and under body mass (vs. normal body mass, RER=10.082, 95%CI:2.076-48.958, P=0.004 2). Conclusion Ischemic stroke patients have a good prognosis, with slightly lower survival rates than the matched general populations. Those who are older, under body mass, and have a higher mRS score have lower survival rates.