Colorectal cancer screening: 20 years of development and recent progress

Table 3 Basic characteristics of preventive colonoscopies performed within the Czech colorectal cancer screening program, 2006-2012

Basic characteristics	Year	Patients with CS	Patients with detected adenoma	Proportion1	Patients with detected CRC	Proportion1
FOBT+ CS	2006	5334	1578	29.6%	335	6.3%
	2007	5679	1635	28.8%	337	5.9%
	2008	7457	2367	31.7%	446	6.0%
	2009	11712	3778	32.3%	599	5.1%
	2010	18327	6235	34.0%	829	4.5%
	2011	20131	7134	35.4%	733	3.6%
	2012	21112	7788	36.9%	770	3.6%
	Total	89752	30515	34.0%	4049	4.5%
Screening CS	2009	1362	345	25.3%	24	1.8%
	2010	4400	1076	24.5%	43	1.0%
	2011	4571	1160	25.4%	42	0.9%
	2012	4480	1138	25.4%	35	0.8%
	Total	14813	3719	25.1%	144	1.0%
Total		104565	34234	32.7%	4193	4.0%

Source: Czech colorectal cancer (CRC) Screening Registry.

¹Proportions of detected neoplasia represent the positive predictive value for fecal occult blood test (FOBT) + colonoscopies (CS) and the detection rate for screening CS.