Table 3 Risk factors associated with anastomotic leak using a logistic regression model

Age at surgery

0.999(0.967–1.032)

0.9508

BMI, kg/m2

 normal: 18.5–24.9

1(ref)

(0.7488)

 low < 18.5

1.584(0.456–5.505)

0.5454

 high ≥: 25

1.168(0.508–2.684)

0.8763

Histology

 High grade serous

1(ref)

 Others

0.609(0.231–1.607)

0.3166

Diabetes

 No

1(ref)

1(ref)

 Yes

3.319(1.212–9.088)

0.0196

3.788(1.130–12.693)

0.0309

Timing of cytoreductive surgery

 PCS

1(ref)

 ICS

0.998(0.474–2.103)

0.9961

Serum albumin level (g/dL)

 ≥3.0

1(ref)

 <3.0

3.372(1.112–10.225)

0.0318

ASA

 1

1(ref)

(0.0897)

 2

0.930(0.429–2.017)

0.1100

 3 or more

2.946(0.989–8.782)

0.0294

Stage (FIGO 2014)

 I, II

1(ref)

(0.6604)

 III

1.946(0.453–8.371)

0.3953

 IV

1.701(0.322–8.975)

0.7366

Cholecystectomy

 No

1(ref)

 Yes

1.376(0.553–3.422)

0.4925

Distal pancreatectomy

 No

1(ref)

1(ref)

 Yes

6.323(2.216–18.037)

0.0006

4.806(1.351–17.099)

0.0153

Splenectomy

 No

1(ref)

 Yes

1.429(0.677–3.017)

0.3496

Residual tumor

 Microscopic

1(ref)

1(ref)

 Macroscopic

7.116(3.237–15.645)

<0.0001

7.434(3.238–)

<0.0001

Additional bowel resection

 No

1(ref)

 Yes

1.348(0.571–3.183)

0.4964

Use of Bevacizumab

 No

1(ref)

 Yes

0.535(0.071–4.012)

0.5425

HIPEC

 No

1(ref)

 Yes

0.767(0.179–3.29)

0.7216

Protective ostomy

 None

1(ref)

 Ileostomy/colostomy

2.213(0.821–5.966)

0.1164

Operation time, min

1.001(0.998–1.004)

0.4469

Blood loss

1.002(1.000-1.003)

0.0896

IMA ligation (Missing = 2)

 No

1(ref)

 Yes

1.101(0.513–2.365)

0.8042

Anastomotic level from the anal verge (cm) (Missing = 47)

 ≥ 10.0

1(ref)

1(ref)

 < 10.0

5.480(1.892–15.868)

0.0017

7.008(2.291–21.434)

0.0006