Table 1

Data represented in figure 2

Volume per annum	Operators	Number	Caecum	CIR (%)
20–49	34	1088	952	87.50
50–99	46	3150	2812	89.27
100–149	24	2891	2573	89.00
150–199	16	2730	2528	92.60
200–249	2	448	412	91.96
250–299	2	546	525	96.15
300–349	2	623	575	92.30
350–399	3	1118	1077	96.33

CIR, caecal intubation rates.