Survival
Patient survival was also inferior for patients experiencing a stroke compared to matched controls. In-hospital mortality was almost 3 times as high (17.0% vs 5.9%; p<0.001). Longer-term survival was also inferior on Kaplan-Meier estimation (p<0.001) (Figure 1). The 1-year and 3-year survival were 61.5% and 53.8% respectively compared to 89.4% and 86.1% for the matched patients. If 30-day conditional survival was imposed, there remained significantly inferior long-term survival (p<0.001) indicating the inferior survival does not entirely relate to early mortality following stroke (Figure 2).