Fig. 1

Probability of survival (Kaplan–Meier curves) in patients discharged from the hospital, stratified according to the presence or absence of hypoglycemia during admission (no hypoglycemia [overall mortality, 26.5%]; mild hypoglycemia [blood glucose 56–70 mg/dL, overall mortality, 46.6%]; severe hypoglycemia [blood glucose ≤ 55 mg/dL, overall mortality, 61.1%]). Vertical ticks represent censored data. P-value was calculated with the log-rank test