Table 2.

Detection rates of colorectal cancer based on the indication for colonoscopy

	Total	Positive FIT			Other than positive FIT
		Total	FIT (+/+)	FIT (+/−)	Total	Symptom	Screening+surveillance
No.	8724	1282	264	1018	7442	1826	5616
All cancers (including in situ), n	79	51	32	19	28	15	13
Detection rate (%)	0.9	4.0*	12.1†	1.9‡	0.4	0.8§	0.2
Invasive cancers, n	37	25	22	3	12	7	5
Detection rate (%)	0.4	2.0*	8.3†	0.3	0.2	0.4¶	0.1

FIT (+/+) indicates two-positive results for the two-sample FIT. FIT (+/−) indicates a one-positive result for the two-sample FIT

*P<0.001, positive FIT vs other than positive FIT.

†P<0.001, FIT (+/+) vs FIT (+/−).

‡P=0.02, FIT (+/−) vs symptom.

§P<0.001, symptom vs screening+surveillance.

¶P=0.01, symptom vs screening+surveillance.

FIT, faecal immunochemical test.