Table 3

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	Percentage complete	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