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Table 5 Postoperative complications based on Clavien-Dindo classification before and during COVID period (excluding COVID infection)

From: Cancer surgery during COVID increased the patient mortality and the transmission risk to healthcare workers: results from a retrospective cohort study (NCT05240378)

Site

Group A

Before COVID period (April 2019–April 2020)

Group B

COVID period (May 2020–May 2021)

Minor

Major

Total

Minor

Major

Total

Breast

16

0

16

9

0

9

Others

10

4

14

5

2

7

Thorax

1

0

1

1

0

1

GIT

8

18

26

4

16

20

Head and neck

36

10

46

18

6

24

Gynecology

12

0

12

8

0

8

Male genital and urinary system

7

0

7

6

0

6

Total

90/9.38

32/3.33

122/12.7

51/8.26

24/3.88

75/12.16

Before vs during COVID

Minor

χ2: 10.99; p-value: 0.061*

Major

χ2: 5.002; p-value: 0.07*

Total

χ2: 12.031; p-value: 0.057*

  1. *p-value > 0.05 is insignificant