Is the ‘driving test’ a robust quality indicator of colonoscopy performance?

Table 1 The differing eligibility criteria in the two categories of accreditation available in the UK

Criteria	JAG accreditation	NHS BCSP accreditation
Lifetime number	> 200	> 1000
Lifetime perforations	< 0.5%	Not documented
Number last 12 mo	> 100	> 150
Sedation
Under 70 years	Midaz < 5 mg/Pethidine < 50 mg	Midaz < 5 mg/Pethidine < 50 mg
70 years +	Midaz < 2.5 mg/Pethidine < 25 mg	Midaz < 2.5 mg/Pethidine < 25 mg
Caecal intubation	> 90%	> 90%
Polyp detection & Removal	> 10%	> 20%
Data certified	Endoscopic supervisor	Endoscopy sister & consultant colleague/clinical director/medical director

JAG: Joint Advisory Group on Gastrointestinal Endoscopy; NHS BCSP: National Health Service Bowel Cancer Screening Programme.