Table 2.

Operative data

n (%) or mean (SD)	Relaparotomy (n = 131)	Primary laparotomy (n = 50)	p value*
Skin incision (cm)	26.7 (5.3)	25.7 (5.7)	0.264
Fascia incision (cm)	27.2 (5.1)	27.0 (4.6)	0.865
Abdominal fascia incision electric	64 (48.9%)	48 (96.0%)	< 0.001
Abdominal fascia incision scissors	67 (51.1%)	2 (4.0%)	< 0.001
Occult hernia	13 (9.9%)	2 (4.0%)	0.321
Incidental incision of the rectus sheath	29 (22.1%)	6 (12.0%)	0.182
Patients with adhesions	68 (51.9%)	3 (6.0%)	< 0.001
Peritoneal adhesion index	10.8 (8.2)	0.4 (1.1)	< 0.001
Patients with enterotomy	21 (16.0%)	2 (4.0%)	0.054
Average number of enterotomies	0.3 (0.8)	0.0 (0.2)	0.002
Access to the abdomen (min)	23.5 (14.9)	8.8 (4.1)	< 0.001
Operative time (min)	220.5 (112.9)	275.4 (115.9)	0.005
Abdominal wall closure (min)	26.4 (11.9)	26.0 (10.2)	0.807
Preparation fascia	57 (43.5%)	4 (8.0%)	< 0.001
Mesh placement	5 (3.9%)	0 (0.0%)	0.325
Intraabdominal drainage	84 (64.1%)	27 (54.0%)	0.280
Surgeon’s experience (years)	13.5 (7.3)	13.7 (8.1)	0.907
Resected organ systems**
Liver	31 (23.7%)	12 (24.0%)	> 0.999
Pancreas	24 (18.3%)	31 (62.0%)	< 0.001
Stomach	18 (13.7%)	21 (42.0%)	< 0.001
Duodenum	17 (12.9%)	25 (50.0%)	< 0.001
Small intestine	56 (42,7%)	20 (40.0%)	0.868
Appendix	1 (0.8%)	1 (2.0%)	> 0.999
Colon	27 (20.6%)	7 (14.0%)	0.421
Gall bladder	16 (12.2%)	28 (36.0%)	< 0.001
Spleen	2 (1.5%)	6 (12.0%)	0.008
Kidney	4 (3.1%)	4 (8.0%)	0.297
Gynecologic	4 (3.1%)	1 (2.0%)	> 0.999
Central vessels	13 (9.9%)	9 (18.0%)	0.218
Peritoneum	18 (13.7%)	0 (0.0%)	0.013
Other	45 (34.3%)	7 (14.0%)	0.011

Differences with P values < 0.05 were deemed statistically significant and these P values are presented in bold

*Categorical variables: chi-square test; continuous variables: Student’s t test

**More than one organ was possible per operation