Table 1 Clinical characteristics of patients in the ICIC and CUS groups in unmatched and matched cohorts

Number of patients

52

25

25

25

Age, years, median (IQR)

79 (76-81)

83 (80-85)

<0.001

81 (76-83)

83 (80-85)

0.014

Male, n (%)

40

(76.9)

17

(68.0)

0.418

18

(72.0)

17

(68.0)

1.000

BMI, kg/m², median (IQR)

23.5 (21.0-25.4)

24.3 (21.4-25.7)

0.440

23.3 (20.9-25.3)

24.3 (21.4-25.7)

0.410

ECOG-PS ≥2, n (%)

2

(3.8)

4

(16.0)

0.083

1

(4.0)

4

(16.0)

0.349

ASA-PS ≥3, n (%)

14

(26.9)

10

(40.0)

0.297

8

(32.0)

10

(40.0)

0.769

Prior abdominal surgery, n (%)

22

(42.3)

8

(32.0)

0.459

11

(44.0)

8

(32.0)

0.561

Clinical tumor stage <2, n (%)

4

(7.7)

8

(32.0)

0.015

3

(12.0)

8

(32.0)

0.171

Clinical tumor stage ≥2, n (%)

48

(92.3)

17

(68.0)

22

(88.0)

17

(68.0)

Neoadjuvant chemotherapy, n (%)

40

(76.9)

7

(28.0)

<0.001

14

(56.0)

7

(28.0)

0.085