Table 5 Univariate logistical regression using the three endpoints of the study

Age at treatment

0.98 (0.97–1.00)

0.13

1.02 (1.00–1.013

0.004

1.02 (1.00–1.04)

0.01

 Female

Ref

Ref

Ref

 Male

1.07 (0.70–1.64)

0.74

1.07 (0.72–1.61)

0.70

1.29 (0.76–2.20)

0.3

Gastric resection (36)

2.87 (1.43–5.79)

0.003

1.17 (0.55–2.51)

0.67

1.38 (0.55–3.46)

0.48

Pancreatectomy (10)

2.50 (0.69–9.03)

0.16

2.04 (0.56–7.37)

0.27

2.97 (0.75–11.81)

0.12

Liver resection (95)

1.05 (0.61–1.80)

0.85

0.89 (0.52–1.50)

0.67

0.56 (0.26–1.23)

0.15

Cholecystectomy (154)

1.24 (0.79–1.94)

0.34

1.66 (1.09–2.53)

0.01

1.60 (0.94–2.73)

0.08

Splenectomy (181)

1.81 (1.18–2.78)

0.006

1.42 (0.94–2.14)

0.08

1.12 (0.66–1.92)

0.65

Small bowel resection (232)

1.16 (0.76–1.78)

0.46

1.47 (0.98–2.19)

0.05

1.74 (1.03–2.92)

0.03

Any colonic resection (365)

1.24 (0.77–2.00)

0.35

2.48 (1.50–4.12)

0.0003

2.3 (1.19–4.63)

0.01

Appendectomy (41)

0.88 (0.39–1.96)

0.76

0.83 (0.38–1.80)

0.65

0.32 (0.07–1.38)

0.12

Rectal resection (193)

1.38 (0.90–2.11)

0.13

1.90 (1.27–2.86)

0.001

1.77 (1.05–2.96)

0.02

Ureter resection (15)

0.25 (0.03–1.96)

0.19

2.06 (0.72–5.91)

0.17

3.56 (1.17–10.77)

0.02

Bladder resection (15)

0.25 (0.03–1.96)

0.19

2.73 (0.97–7.71)

0.05

2.54 (0.78–8.23)

0.11

Abdominal hernia repair (13)

2.35 (0.75–7.35)

0.13

1.35 (0.41–4.47)

0.61

1.23 (0.26–5.69)

0.78

Number of resections

1.11 (1.01–1.22)

0.02

1.20 (1.09–1.31)

0.00007

1.21 (1.08–1.36)

0.0007