Table 5 Results of sensitivity analysis

Estimated blood loss

R vs. L

Fixed

5

− 39.9247 [− 78.7622; − 1.0871]

2.01

0.0439

R vs. L

Random

5

− 55.0871 [− 139.0087; 28.8345]

1.29

0.1983

R vs. O

Fixed

6

− 394.2279 [− 456.4271; − 332.0286]

12.42

R vs. O

Random

6

− 521.7027 [− 809.7816; − 233.6238]

3.55

Length of hospital stay

R vs. L

Fixed

5

− 0.7770 [− 1.7023; 0.1484]

1.65

R vs. L

Random

5

− 1.4296 [− 3.5326; 0.6734]

1.33

R vs. O

Fixed

6

− 5.2225 [− 6.1485; − 4.2965]

11.05

R vs. O

Random

6

− 5.1505 [− 6.4793; − 3.8216]

7.60

Operating time

R vs. L

Fixed

5

− 7.6177 [− 31.2545; 16.0192]

0.63

R vs. L

Random

5

− 0.8561 [− 46.3735; 44.6612]

0.04

R vs. O

Fixed

5

24.4862 [11.5380; 37.4344]

3.71

R vs. O

Random

5

9.8527 [− 57.0904; 76.7958]

0.29

Postoperative complication

R vs. L

Fixed

6

1.4541 [0.6502; 3.2516]

0.91

R vs. L

Random

6

1.3484 [0.5235; 3.4731]

0.62

R vs. O

Fixed

6

0.4710 [0.2537; 0.8747]

2.38

R vs. O

Random

6

0.4878 [0.2600; 0.9154]

2.24

Pelvic nodes

R vs. L

Fixed

3

− 0.5664 [− 3.1615; 2.0288]

0.43

R vs. L

Random

3

− 0.2074 [− 3.5497; 3.1349]

0.12

R vs. O

Fixed

4

0.0048 [−1.9418; 1.9514]

<0.01

R vs. O

Random

4

0.0640 [− 2.5658; 2.6937]

0.05

Postoperative recurrence

R vs. L

Fixed

2

0.2387 [0.0445; 1.2792]

1.67

R vs. L

Random

2

0.2463 [0.0326; 1.8617]

1.36

R vs. O

Fixed

2

0.8506 [0.3356; 2.1562]

0.34

R vs. O

Randomed

2

0.7633 [0.1665; 3.4995]

0.35

Overall survival rate

R vs. L

Fixed

2

2.2000 [0.0842;5 7.4835]

0.47

R vs. L

Random

2

2.2000 [0.0842; 57.4835]

0.47

R vs. O

Fixed

2

6.4355 [1.6722; 24.7678]

2.71

R vs. O

Randomed

2

6.6854 [1.8172; 24.5959]

2.86

Disease-free survival rate

R vs. L

Fixed

2

1.6909 [0.2572; 11.1175]

0.55

R vs. L

Randomed

2

1.7085 [0.2641; 11.0547]

0.56