The Effect of COVID-19 Infection on Post-operative Complications

We did an multi-centre, observational cohort study in patients who had surgery in 2023. We included participants who underwent surgery after the COVID-19 to lift the lockdown in China. Patients meeting the same criteria were eligible who had been treated during the same calendar period of 2019 through 2021. The primary outcomes were the post-operative in-hospital complications. We hypothesized that the post-operative in-hospital complications during the COVID-19 to lift the lockdown period in China were different to complications for the same kind of patients during the same calendar period of the previous years.

Inclusion Criteria:Underwent surgery at Xijing Hospital after the COVID-19 to lift the lockdown in China, effective as of 29th December in 2022 to 7th January in 2023.Exclusion Criteria:Patients who had missing primary information data (i.e., postoperative information).