Learning curve cumulative summation (LC-Cusum) analysis of competence of independent colonoscopists (numbered 1–15) using different values for p1
Percentage complete | Practitioner crossed upper control limit (for different values of p1) | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Colonoscopist | Hospital | N | 0.30 | 0.25 | 0.20 | 0.19 | 0.18 | 0.17 | 0.16 | 0.15 | |
1 | GRH | 286 | 90 | Yes | Yes | Yes | No | No | No | No | No |
2 | GRH | 193 | 95 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No |
3 | GRH | 583 | 93 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
4 | GRH | 165 | 90 | Yes | Yes | Yes | Yes | No | No | No | No |
5 | GRH | 301 | 91 | Yes | Yes | Yes | Yes | Yes | Yes | No | No |
6 | GRH | 413 | 93 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
7 | GRH | 427 | 93 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
8 | GRH | 217 | 92 | Yes | Yes | Yes | Yes | Yes | No | No | No |
9 | GRH | 521 | 91 | Yes | Yes | Yes | Yes | Yes | Yes | No | No |
10 | QEH | 413 | 92 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No |
11 | QEH | 287 | 94 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
12 | QEH | 182 | 90 | Yes | Yes | Yes | Yes | No | No | No | No |
13 | QEH | 161 | 91 | Yes | Yes | Yes | Yes | Yes | No | No | No |
14 | QEH | 144 | 92 | Yes | Yes | Yes | No | No | No | No | No |
15 | QEH | 145 | 90 | Yes | Yes | Yes | Yes | No | No | No | No |
Median n | Mean % complete | Percentage of practitioners who crossed upper control limit (for different values of P1) | |||||||||
286 | 92 | 100 | 100 | 100 | 87 | 67 | 53 | 40 | 27 |
GRH, Gloucestershire Royal Hospital; QEH, Queen Elizabeth Hospital.