Table 1. Main characteristics of subjects enrolled in the study by screening programme.

Programme	Florence	Bussolengo	Alto Vicentino	Feltre	Overall
Study population
Number of invited subjects	14 969	13 201	5768	2708	36 646
Participants to routine screening who refused to participate in the study (%)	3.6	4.5	4.1	4.0	3.9
Number of recruited subjects	7343	7211	3932	2110	20 596
Compliance to the study (%)	49.1	54.6	68.2	77.9	56.2
Age class (%)
50–59 years	44.1	56.3	54.5	56.1	51.6
60–69 years	55.9	43.7	45.5	43.9	48.4
Sex (%)
Male	43.5	47.4	48.1	48.0	46.2
Female	56.5	52.6	51.9	52.0	53.8
Subjects with a positive test (n)a	546	664	265	171	1646
Positivity rate (%)b	7.4	9.2	6.7	8.1	8.0
Compliance to colonoscopy (%)c	83.5	90.1	96.2	91.2	89.0
Colonoscopies performed (n)	456	598	255	156	1465
Complete colonoscopy rate (%)d	96.1	93.3	96.1	98.7	95.2
Diagnosed lesions (n)
Cancers	24	26	12	7	69
Advanced adenomas	136	192	91	46	465

^aAt least one sample result at ⩾80 ng ml⁻¹.

^bMultiplied with 100 screened subjects.

^cMultiplied with 100 positive subjects.

^dMultiplied with 100 colonoscopies.