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Table 3 In-hospital mortality by month of surgery

From: Cardiac surgery outcome during the COVID-19 pandemic: a retrospective review of the early experience in nine UK centres

Month of surgery All (n = 755) Covid-19 negative (n = 702) Covid-19 positive (n = 53)
March 2020
 N(%) 27 (3.6) 17 (3.1) 10 (32.3)
 Rate per 30 days (95%CI) 0.13 (0.09–0.20) 0.08 (0.05–0.14) 0.67 (0.36–1.25)
April 2020
 N(%) 9 (6.0) 6 (4.7) 3 (13.6)
 Rate per 30 days (95%CI) 0.18 (0.08–0.37) 0.13 (0.05–0.33) 0.38 (0.12–1.16)
P value p = 0.528 p = 0.107 p = 0.195