The Kaplan–Meier survival plots of 1531 patients with QTc ≥ 500 ms compared with 2099 patients with moderately prolonged QTc (QTc 470–499 ms for males and QTc 480–499 ms for females) and 43 893 patients with normal QTc (QTc < 470 ms for males and QTc < 480 ms for females) (A). The Kaplan–Meier survival plots comparing 907 females with QTc ≥ 500 ms with 624 males with QTc ≥ 500 ms (B). The Kaplan–Meier survival plots comparing 1187 males with QTc 470–499 ms with 912 females with QTc 480–499 ms (C). The Kaplan–Meier survival plots comparing 23 129 females with QTc < 480 ms with 20 764 males with QTc < 470 ms (D). QTc, corrected QT interval.