Fig. 3

Cumulative time to events between patients with euthyroid (EU), hypothyroidism (HT) with or without thyroxine supplement. Multivariate-adjusted survival curves comparing the time to (a) carotid artery stenosis (CAS) progression and (b) ischemic stroke between patients in the EU group and HT group with and without thyroxine supplements. The incidence rates of CAS progression and ischemic stroke were similar regardless of thyroxine supplementation