Fig. 3From: Effect of pioglitazone in acute ischemic stroke patients with diabetes mellitus: a nested case–control studyEvent-free survival plot according to treatment with pioglitazone. The plot illustrates an estimated event-free survival curve according to treatment with pioglitazone (defined as exposure within the past 30 days) during the followed-up period after acute ischemic stroke. p value is obtained from the Mantel–Byar test which compares survival curves by treatment with pioglitazoneBack to article page