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Table 1 Patient characteristics

From: Lower gastrointestinal bleeding—Computed Tomographic Angiography, Colonoscopy or both?

  All patients
(n = 183)
CTA
(n = 32)
LE
(n = 122)
P
Age, median (range) 75 (21–99) 68 (21–94) 77 (33–99) 0.004
Male, n (%) 109 (59.6) 19 (59.4) 71 (58.2) 0.909
Hb (g/L), Mean ± SD 110 ± 27 102 ± 30 112 ± 24 0.090
MAP (mmHg), Mean ± SD 93 ± 18 85 ± 18 95 ± 16 0.006
HR, Mean ± SD 83 ± 16 82 ± 15 83 ± 16 0.881
SI, Mean ± SD 0.66 ± 0.22 0.72 ± 0.27 0.63 ± 0.18 0.082
Diagnostic, n (%)
 Diverticular 48 (26.2) 9 (28.1) 38 (31.1) 0.741
 Unknown location 41 (22.4) 5 (15.6) 21 (17.2) 0.831
 Colo-rectal lesion 34 (18.6) 5 (15.6) 27 (22.1) 0.419
 Post-interventional 23 (12.6) 2 (6.2) 17 (13.9) 0.239
 Small bowel 20 (10.9) 11 (34.4) 4 (3.3) <0.001
 Colo-rectal neoplasia 17 (9.3) 0 (0) 15 (12.3) 0.037
  1. Comparison of baseline characteristics of patients who had CTA and patients who had LE. Significant P-values (<0.05) are indicated in bold characters. SI is defined as HR/Systolic blood pressure
  2. CTA Computed tomographic angiography, LE Lower endoscopy, Hb Hemoglobin level, MAP Mean arterial pressure, HR Heart rate, SI Shock index