Table 1.
Baseline Characteristics of the Study Population, Stratified by Initial Indication for Multiphase Computed Tomographic Enterographya
|
Variable |
Overt small bowel bleeding (N=486) | Occult small bowel bleeding with heme-positive stool (N=187) | Occult small bowel bleeding with iron-deficiency anemia (N=414) |
|---|---|---|---|
| Age (y) | 65 (54-76) | 66 (57-73) | 65 (55-73) |
| Female | 228 (46.9) | 111 (59.4) | 230 (55.6) |
| Transfusionsb | 339 (69.8) | 110 (58.8) | 159 (38.4) |
| Prior endoscopic evaluationc | 440 (90.5) | 166 (88.8) | 371 (89.6) |
| Further testing | |||
| Surgery | 57 (11.7) | 22 (11.8) | 29 (7.0) |
| Balloon-assisted enteroscopy | 126 (25.9) | 53 (28.3) | 68 (16.4) |
| Capsule endoscopy | 195 (40.1) | 82 (43.9) | 139 (33.6) |
| Angiography | 25 (5.1) | 3 (1.6) | 3 (0.7) |
| Other | 76 (15.6) | 41 (21.9) | 54 (13.0) |
a
Data are presented as median (interquartile range) or No. (percentage) of patients.
b
Prior to multiphase computed tomographic enterography.
c
Prior esophagogastroduodenoscopy and colonoscopy in the 24 months preceding multiphase computed tomographic enterography.