Fig. 3

KM survival curves comparing A: cumulative incidence of MI and B: in-hospital mortality among different HGI groups. The transiently higher survival probability in the Q4 group during early follow-up may reflect short-term therapeutic interventions or enrollment bias. However, the long-term risk diverges markedly, with Q4 exhibiting the lowest 150-day survival rate (45% vs. 68% in Q2 and 62% in Q3)