Table 3

Key performance indicators with data from the previous audit for comparison

Bowles 1999UK 2011EnglandNorthern IrelandScotlandWales
Procedures922320 08516 0437802564698
Caecal intubation rate (CIR) (95% CI)76.9%92.3% (91.9 to 92.6)92.6% (92.2 to 93.0)91.5% (89.4 to 93.3)91.1% (90.0 to 92.5)89.8% (87.4 to 91.9)
Adjusted CIR 95.8%96.1%95.6%94.7%94.1%
Polyp detection rate (95% CI)22.5%32.1% (31.4 to 32.7)32.3% (31.6 to 33.1)30.9% (30.4 to 37.3)30.2% (28.5 to 32.0)35.4% (31.9 to 39.0)
Procedures with polyps ≥1 cm 11.7%12.1%7.4%10.7%12.0%
Polyp retrieval rate 92.3%92.1%94.7%93.0%91.3%
No sedation 10.7%11.2%13.8%4.3%18.1%
General anaesthetic (GA)/propofol 0.4%0.3%2.4%0.3%0.6%
Conscious sedation94.6%88.9%88.5%83.7%95.4%81.4%
Nitrous oxide 8.4%9.7%7.2%1.4%6.0%
Comfort score ≥4 9.8%9.5%6.9%12.1%13.3%
Excellent or adequate prep 88.2%88.6%87.8%85.9%88.4%