Table III.

Propensity – adjusted survival for 30-day mortality following cardiac surgery with perioperative or postoperative COVID-19, before available vaccination (March 1st, 2020, and December 22nd, 2020)

Parameter	HR (95% CI)	P Value
Positive COVID-19 (vs negative COVID-19) at date of surgery to 14 days post-op	14.3 (3.4–60.1)	0.0003
Age (years)	1.1 (1.03–1.1)	0.0001
Combined CABG + valve procedure (vs CABG)	2.6 (1.4–5.0)	0.004
MVR (vs CABG)	4.2 (1.1–15.9)	0.04

CABG – isolated Coronary Artery Bypass Grafting, MVR-isolated mitral valve replacement.