Table 2 a. Univariable analysis for risk factors of new episodes of ASBO. b. Multivariable analysis

Demographics

Gender

 Male

5/29 (17.2%)

Ref

 Female

13/93 (14.0%)

0.78

0.28–2.20

0.643

Age* (each year increase)

52.7 (± 15.5)*

1.02

0.98–1.06

0.448

 Readmission for ASBO

53.0 (± 15.0)

 No readmission for ASBO

51.1 (± 11.2)

Patient history

ASBO in history

 No

1/ 62 (1.6%)

Ref

 Yes

17/60 (28.3%)

20.8

2.80–156.4

0.003

Number of previous ASBO

 No previous ASBO

1/62 (1.6%)

Ref

 One episode of ASBO

2/19 (10.5%)

6.9

0.62–75.9

0.115

 Multiple episodes of ASBO

15/41 (36.6%)

28.8

3.79–218.6

0.001

Treatment of previous ASBO

 No ASBO

2/63 (3.2%)

Ref

 Conservative

6/17 (35.3%)

14.8

2.97–73.2

0.001

 Operative

10/42 (23.8%)

8.5

1.85–38.6

0.006

Number of previous surgery

 One surgical procedure

3/18 (16.7%)

Ref

 Multiple surgical procedures

15/104 (14.4%)

0.86

0.25–2.97

0.809

Type of previous surgery

 Laparoscopy

2/24 (8.3%)

Ref

 Laparotomy

16/98 (16.3%)

1.99

0.46–8.65

0.360

Diagnostic results

Extent of adhesions on CineMRI

 Suspected single strand

2/32 (6.3%)

Ref

 One quadrant

11/52 (21.2%)

3.78

0.84–17.1

0.084

 Two quadrants

3/25 (11.8%)

2.00

0.33–11.9

0.449

 Three or four quadrants

2/13 (15.4%)

2.58

0.36–18.3

0.343

Treatment of adhesion-related pain

 Type of treatment

 Non-operative

14 (26.4%)

Ref

Operative

4 (5.8%)

0.19

0.06–0.58

0.003

Type of surgery during elective adhesiolysis

 Laparoscopy

1/33 (3.0%)

Ref

 Conversion

1/17 (5.9%)

1.63

0.10–26.0

0.731

 Laparotomy

2/19 (10.5%)

3.37

0.31–37.3

0.321

ASBO in history

19.2

2.54–144.4

0.004

Count of ASBO in history

NS

NS

NS

Treatment of ASBO

NS

NS

NS

Operative treatment (elective adhesiolysis)

0.21

0.07–0.65

0.007