Table 2 Baseline characteristics of patients with and without significant findings on emergency abdominal computed tomography

Mean age, years

57

62

0.2

Sex (male), N (%)

33/71 (46)

16/38 (42)

0.4

Positive shock index, N (%)

Missing

5/62^a (8)

9

2/33^a (6)

5

1

Fever ≥38 °C, N (%)

Missing

11/59^a (18)

12

4 /33^a (12)

5

0.56

Abdominal guarding, N (%)

Missing

24/68^a (35)

3

10/37^a (27)

1

0.51

Pain duration > 6 h, N (%)

Missing

55/68^a (81)

3

30/35^a (86)

3

0.6

Pain intensity ≥7/10, N (%)

Missing

22/39^a (56)

32

13/19^a (68)

19

0.4

Abnormal bowel sounds, N (%)

Missing

25/53^a (47)

18

19/28^a (68)

10

0.10

≥11

Missing

43/69^a (62)

2

22/38^a (58)

0

0.68

≥ 20

Missing

35/69^a (51)

2

18/38^a (47)

0

0.84

≥40

Missing

30/69^a (43)

2

11/38^a (29)

0

0.15

Leukocytosis, N (%)

Missing

38/71 (54)

0

10/38 (26)

0

0.008

Relative lymphopenia, N (%)

Missing

48/69^a (70)

2

14/37^a (38)

1

0.002

Association of leukocytosis & relative lymphopenia, N (%)

33/69^a (48)

4/37^a (11)

≤ 0.001

Missing

2

1