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. Author manuscript; available in PMC: 2024 Jun 1.
Published in final edited form as: Ann Surg. 2022 Jun 28;277(6):920–928. doi: 10.1097/SLA.0000000000005515

Table 3.

Event rates and hazard ratios from Cox proportional hazards model for primary and secondary endpoints by COVID-19 status in the matcheda cohort

Outcomeb COVID(−)
N (%)
COVID(+)
N (%)
Hazard ratio
(95% CI)
All-cause Mortality 522 (0.04) 176 (0.04) 1.6 (1.4, 2.0)
Any pulmonary complication 697 (0.05) 450 (0.09) 2.1 (1.9, 2.4)
Any thrombotic complication 645 (0.05) 214 (0.04) 1.4 (1.2, 1.6)
Any septic complication 472 (0.03) 237 (0.05) 1.6 (1.4, 1.9)

Abbreviations: CI Confidence Interval; N/A Not applicable

a

Each COVID(+) patient was matched to up to 3 COVID(−) patients based on age, sex, race, ethnicity, BMI, smoking status, CPT code, anesthesia type, ASA class, case urgency, CCI, and cancer history.

b

Outcomes were observed 3/1/20–3/26/21. Pulmonary complications are a composite of pneumonia, acute respiratory failure, and acute respiratory distress syndrome. Thrombotic complications are a composite of ischemic stroke, myocardial infarction, venous thromboembolism, and arterial thromboembolism. Septic complications are a composite of sepsis from an unspecified source, gram-negative sepsis, and post-procedural septic shock.