Table 1 Univariate analysis of patient-related variables with symptomatic anastomotic leakage

Gender

1.120

0.290

 Male

6 (75)

 Female

2 (25)

Age (years)

3.907

0.048^†

 ≤ 65

8 (100)

 >65

0 (0)

ASA category

1.290

0.525

 I

0 (0)

 II

7 (87.5)

 III

1 (12.5)

Smoking

0.148

0.701

 No

6 (75)

 Yes

2 (25)

Alcohol consumption

2.408

0.121

 No

5 (62.5)

 Yes

3 (37.5)

Previous history of abdominal surgery

0.175

0.676

 No

7 (87.5)

 Yes

1 (12.5)

Preoperative intestinal obstruction

0.886

0.346

 No

8 (100)

 Yes

0 (0)

Hypertension

0.796

0.372

 No

7 (87.5)

 Yes

1 (12.5)

Diabetes

0.989

0.320

 No

8 (100)

 Yes

0 (0)

BMI (kg/m²)

2.352

0.309

 ≤18

0 (0)

18–25

6 (75)

 ≥ 25

2 (25)

Neoadjuvant therapy

2.784

0.095^†

 No

5 (62.5)

 Yes

3 (37.5)

Pulmonary insufficiency

2.571

0.109

 No

8 (100)

 Yes

0 (0)

Preoperative hemoglobin(g/L)

0.898

0.343

 <120

3 (37.5)

 ≥120

5 (62.5)

Preoperative white blood cell

0.591

0.442

 4000–12000

8 (100)

 <4000 or >12000

0 (0)

Preoperative serum albumin (g/L)

0.440

0.507

 <35

1 (12.5)

 ≥35

7 (87.5)

Preoperative CEA (ng/ml)

0.732

0.392

 <5

6 (75)

 ≥5

2 (25)