Patient demographics and audit results
| Instrument | Noblett | Rbi2 |
| Male:female | 57:19 | 110:74 |
| Mean age at time of biopsy, d (range) | 32.5 (2–318) | 49 (2–358) |
| No of biopsies | 197 | 438 |
| No of biopsy episodes | 76 | 184 |
| Mean no of biopsies per episode (range) | 2.6 (1–7) | 2.4 (1–3) |
| Inadequate biopsies (%) | 82 (41%) | 77 (18%) |
| Inadequate episode rate (%) | 10/76 (13%) | 14/184 (8%) |
| Significant complications | 1 (bowel perforation) | 3 (rectal bleeding) |
| Hirschsprung’s disease (%) | 19 (28%) | 49 (27%) |
Data regarding demographics and details of the biopsies for all of the patients undergoing SRB with the Noblett and Rbi2 devices.