From: Favorable factors for the survival of ST-segment elevation myocardial infarction patients with medium- and high-risk thrombolysis in myocardial infarction scores
Low-risk group (n = 195)
Medium-risk group (n = 165)
High-risk group (n = 73)
Pa
Pb
In-hospital survival rate
97.95%
93.94%
82.19%
0.0499
 < 0.0001