Comparison of potential predictors (dichotomous variables) of positive results between patients with a positive initial angiogram and patients with a negative initial angiogram
| Dichotomous variable | Initial angiogram; no. (%) | Odds ratio (95% CI) | p value | |
|---|---|---|---|---|
| Positive (n = 15) | Negative (n = 20) | |||
| Sex, male | 11 (73) | 8 (40) | 0.24 (0.06–1.03) | 0.09 |
| Past GI bleed | 6 (40) | 4 (20) | 2.67 (0.59–12.02) | 0.27 |
| Inflammatory bowel disease | 0 (0) | 0 (0) | 1.31 (0.08–22.62) | 1.00 |
| Past GI surgery | 6 (40) | 6 (30) | 1.56 (0.38–6.36) | 0.72 |
| Diverticulosis | 6 (40) | 4 (20) | 2.67 (0.59–12.02) | 0.27 |
| ASA use | 4 (27) | 7 (35) | 0.68 (0.16–2.93) | 0.72 |
| Anticoagulant use | 2 (13) | 4 (20) | 0.62 (0.10–3.91) | 0.68 |
| Melena | 4 (27) | 10 (50) | 0.36 (0.09–1.54) | 0.30 |
| Diarrhea | 3 (20) | 6 (30) | 0.58 (0.12–2.85) | 0.70 |
| Constipation | 3 (20) | 1 (5) | 4.75 (0.44–51.11) | 0.29 |
| Hematemesis | 0 (0) | 1 (5) | 0.63 (0.05–7.53) | 1.00 |
| Syncope/presyncope | 5 (33) | 9 (45) | 0.61 (0.15–2.45) | 0.73 |
| Pain/cramping | 2 (13) | 3 (15) | 0.87 (0.13–6.00) | 1.00 |
| Mental status change | 1 (7) | 2 (10) | 0.64 (0.05–7.83) | 1.00 |
| Orthostatic change in BP | 2 (13) | 6 (30) | 0.36 (0.06–2.11) | 0.42 |
| Abdominal tenderness | 2 (13) | 6 (30) | 0.36 (0.06–2.11) | 0.42 |
| Blood on rectal examination | 15 (100) | 15 (75) | 6.00 (0.65–55.66) | 0.06 |
| Bleeding on gastroduodenoscopy* | 2 (25) | 3 (27) | 1.13 (0.14–9.00) | 1.00 |
| Bleeding on colonoscopy† | 1 (14) | 1 (9) | 1.67 (0.09–31.87) | 1.00 |
| Nuclear scintigraphy positive‡ | 10 (100) | 10 (83) | 0.33 (0.03–3.72) | 0.48 |
ASA = acetylsalicylic acid; BP = blood pressure; CI = confidence interval; GI = gastrointestinal.
↵* Data available for 8 of 15 patients with positive angiograms and 11 of 20 patients with negative angiograms.
↵† Data available for 7 of 15 patients with positive angiograms and 11 of 20 patients with negative angiograms.
↵‡ Data available for 10 of 15 patients with positive angiograms and 12 of 20 patients with negative angiograms.