Table 3: Predisposing factors.

Initially no fistula ( )Preexisting fistula ( )Any fistula overall ( ) value (any fistula versus no fistula)
No fistula overall ( )Fistula during NPWT ( )Fistula after NPWT ( )

Inflammatory bowel disease8.7% (4)20.0% (1)0.0% (0)7.7% (2)8.6% (3)1.0
Diverticulitis0.0% (0)20.0% (1)50.0% (2)11.5% (3)17.1% (6)0.01
Pancreatitis8.7% (4)20.0% (1)25.0% (1)7.7% (2)11.4% (4)0.72
Cholecystitis15.2% (7)20.0% (1)25.0% (1)19.2% (5)20.0% (7)0.77
Radiation therapy0.0% (0)0.0% (0)0.0% (0)0.0% (0)0.0% (0)NA
Poor nutritional status6.5% (3)20.0% (1)0.0% (0)7.7% (2)8.6% (3)1.0
Acute renal insufficiency45.7% (21)20.0% (1)25.0% (1)19.2% (5)20.0% (7)0.02
Chronic renal insufficiency0.0% (0)20.0% (1)0.0% (0)7.7% (2)8.6% (3)0.08
Abdominal aortic aneurysm21.7% (10)0.0% (0)0.0% (0)7.7% (2)5.7% (2)0.06
Abdominal trauma2.2% (1)0.0% (0)0.0% (0)3.9% (1)2.9% (1)1.0
Malignancy15.2% (7)20.0% (1)25.0% (1)34.6% (9)31.4% (11)0.11
Ischemic bowel26.1% (12)20.0% (1)25.0% (1)11.5% (3)14.3% (5)0.27
Steroid treatment10.9% (5)20.0% (1)0.0% (0)7.7% (2)8.6% (3)1.0
Other17.4% (8)40.0% (2)0.0% (0)11.5% (3)14.3% (5)0.77