Fig. 3. Outcomes and baseline characteristics according to ER admission day. (A) Thirty-day major adverse cardiac events (MACE) according to ER admission day. The incidence of MACE shows a trend of increase from Monday to Sunday. (B) Baseline Troponin-I elevation according to ER admission day. Distribution of patients with elevated baseline troponin-I shows a trend of gradual increase from Monday to Sunday. (C) Baseline electrocardiographic ST-segment depression according to ER admission day. Distribution of patients with baseline ECG change does not show statistically significant trend. (D) Baseline high TIMI risk score according to ER admission day. Distribution of patients with high TIMI risk score did not get statistically significant trend. (E) Admission to-PCI time according to ER admission day. The admission-to-PCI time has a trend of gradual increase from Monday to Saturday, revealing significantly longer time on Saturday than Tuesday or Sunday. (F) Symptom to-admission time according to ER admission day. The distribution of symptom-to-admission time shows a trend of longest time on Monday and gradual decrease toward the weekend, without statistical significance.