Table 3

Data represented in figure 4

Volume per annum	Operators	Number	Caecum	CIR (%)
20–29	15	362	308	85.08
30–39	12	410	357	87.07
40–49	7	316	287	90.82
50–59	14	750	640	85.33
60–69	13	842	751	89.19
70–79	8	587	524	89.27
80–89	8	682	625	91.64
90–99	3	289	272	94.12
100–109	9	955	841	88.06
110–119	4	455	412	90.55
120–129	3	366	314	85.79
130–139	4	538	487	90.52
140–149	4	577	519	89.95
150–159	3	466	444	95.28
160–169	5	821	746	90.86
170–179	5	864	804	93.06
180–189	1	187	166	88.77
190–199	2	392	368	93.88

CIR, caecal intubation rates.