Table 3. Predictors for post-discharge mortality in the overall population.

Variables	Unadjusted HR (95% CI)	P-value	Adjusted HR (95% CI)	P-value
*Presented as ≥ 1 of the coronary artery disease, atrial fibrillation, heart failure, stroke, peripheral artery disease. CVD: cardiovascular disease; COVID: coronavirus disease; E/e’avg: the ratio of early diastolic mitral inflow velocity to the averaged value of early diastolic mitral annulus velocities obtained from the septal and lateral side of mitral annulus; LVEF: left ventricular ejection fraction; PACE: perioperative adverse cardiac event.
PACE	2.55 (1.63–3.99)	< 0.001	3.01 (1.69–5.35)	< 0.001
Pre–existing CVD*	1.55 (1.02–2.37)	0.039
Age	1.08 (1.04–1.11)	< 0.001	1.04 (1.00–1.08)	0.066
Male	1.87 (1.23–2.84)	0.004
Body mass index	0.94 (0.88–1.00)	0.039
Diabetes mellitus	1.18 (0.78–1.77)	0.436
Hypertension	0.72 (0.46–1.12)	0.140
Dyslipidemia	0.90 (0.60–1.35)	0.606
Chronic kidney disease	2.34 (1.37–4.02)	0.002	3.01 (1.49–6.10)	0.002
Dementia	2.22 (1.42–3.45)	< 0.001	1.89 (0.99–3.58)	0.053
Medications at discharge
Antiplatelet	1.19 (0.79–1.79)	0.416
Statin	0.85 (0.56–1.28)	0.429
Anticoagulant	1.64 (0.82–3.26)	0.163
Hospitalization period
Pre–COVID–19	1.00 (reference)	Not applicable
During/post–COVID–19	1.39 (0.87–2.20)	0.170
Laboratory findings
Hemoglobin	0.85 (0.76–0.94)	0.002
HbA1c	1.16 (0.97–1.40)	0.109
Creatinine	1.19 (1.09–1.31)	< 0.001
Albumin	0.39 (0.26–0.58)	< 0.001	0.55 (0.29–1.03)	0.064
Log–transformed troponin I	1.42 (1.20–1.67)	< 0.001
Echocardiographic findings
LVEF	0.97 (0.95–0.99)	0.004	0.97 (0.95–1.00)	0.036
E/e’avg	1.10 (1.03–1.17)	0.006