Table 2.
Demographic and clinical characteristics of patients in the study.
| Characteristics | |
|---|---|
| Age, median (interquartile range) | 60 (48-71) |
| Sex | |
| Male, n (%) | 202 (48.8) |
| Female, n (%) | 212 (51.2) |
| Participating site | |
| Gia-Dinh People's Hospital, n (%) | 74 (17.9) |
| Cho-Ray Hospital, n (%) | 111 (26.8) |
| Dong-Nai General Hospital, n (%) | 43 (10.4) |
| Can-Tho Central Hospital, n (%) | 55 (13.4) |
| Bạch-Mai Hospital, n (%) | 51 (12.3) |
| Hue Central Hospital, n (%) | 40 (9.6) |
| Da-Nang General Hospital, n (%) | 40 (9.6) |
| Previous admission with ALGIB, n (%) | 115 (27.8) |
| Comorbidities | |
| Congestive heart failure, n (%) | 12 (2.9) |
| Ischemic heart disease, n (%) | 42 (10.1) |
| Chronic obstructive pulmonary disease, n (%) | 6 (1.4) |
| Chronic liver disease, n (%) | 37 (8.9) |
| Chronic kidney disease, n (%) | 26 (6.3) |
| Stroke or transient ischemic attack, n (%) | 15 (3.6) |
| Cancer, n (%) | 38 (9.2) |
| Hypertension, n (%) | 147 (35.5) |
| Diabetes, n (%) | 45 (10.9) |
| Preadmission medications | |
| Aspirin, n (%) | 20 (4.8) |
| Clopidogrel, n (%) | 22 (5.3) |
| Dual antiplatelet, n (%) | 8 (1.9) |
| Warfarin, n (%) | 2 (0.5) |
| NOAC, n (%) | 5 (1.2) |
| Corticosteroid, n (%) | 9 (2.2) |
| NSAIDs, n (%) | 30 (7.2) |
| Presenting signs and symptoms | |
| Heart rate (beat per minute) | 86 (80-92) |
| Systolic blood pressure (mmHg) | 120 (110-130) |
| Melena, n (%) | 64 (15.4) |
| Syncope, n (%) | 2 (0.5) |
| Blood on DRE, n (%) | 260 (62.8) |
| Laboratory data at admission | |
| Hematocrit (%) | 31.8 (24.5-38.4) |
| Hemoglobin (g/L) | 103 (76-126) |
| Platelet (×103/μL) | 242 (191-311) |
| INR | 1.06 (1.00-1.15) |
| Blood urea nitrogen (mg/dL) | 14.2 (11-21) |
| Creatinine (μmol/L) | 0.93 (0.79-1.14) |
| Types of lower gastrointestinal endoscopy | |
| Colonoscopy, n (%) | 264 (63.8) |
| Sigmoidoscopy, n (%) | 78 (18.8) |
| Rectoscopy, n (%) | 68 (16.4) |
| Enteroscopy, n (%) | 5 (1.2) |
| Abdominal CT scan, n (%) | 80 (19.3) |
Data are n (%) or median (interquartile range). NOAC: novel oral anticoagulant; NSAIDs: nonsteroidal anti-inflammatory; DRE: digital rectal examination.