TNNI3 and pneumonia: The univariable Cox analysis showed that age (HR = 0.927; 95% CI: 0.861–0.998, and p = 0.044), elevated cTnI (HR = 9.603; 95% CI: 1.487–55.209, and p = 0.016), and in-hospital pneumonia (HR = 0.104; 95% CI: 0.013–0.837, and p = 0.033) were significantly correlated with future MACEs (Table 3).