Table 3.
‘Diagnostic yield’ dependent on age and the YFCCP giving a ‘number needed to test’ (NNT) for a positive diagnosis of OCD
| Referral pathway | Diagnostic yield expressed as a percentage based on use or non-use of the YFCCP (absolute numbers) |
NNT | ||||
| 18-29 years | 30-39 years | 40-49 years | 50-59 years | Total | ||
| YFCCP | 32.9% (78/237) |
33.0% (82/248) |
22.9% (61/266) |
18.5% (53/287) |
26.4% (274/1038) |
3.8 |
| Non-YFCCP | 20.1% (143/709) |
19.2% (193/1003) |
12.7% (237/1864) |
12.3% (225/1828) |
14.8% (798/5404) |
6.8 |
OCD, organic colonic disease; YFCCP, York faecal calprotectin care pathway.