Table 2. GPs’ estimations: percentage of positive FIT results and combined probability of CRC and AA.

Interview	1	2	3	4	5	6	7	8	9	10	11	Provided by RIVM 32
Positive FIT, %	10	10–15	60	4–12	10	10	3	2	3	15	15–30	6.4
CRC or AA, %	10	40–45	20	12–16	10	40	30–35	20	40	2–5	40–50	Total 57.2 CRC 8.7 AA 48.5

AA = advanced adenomas. CRC = colorectal cancer. FIT = faecal immunochemical test. RIVM = National Institute of Public Health and Environment