Colorectal cancer fecal screening test completion after age 74, sources and outcomes in French program

Table 1 Total tests performed in the ten districts and part of tests performed by elderly aged ≥ 75 years (elderly ≥ 75), by year of campaign

Campaign year	Total tests performed in the districts	Tests performed by elderly ≥ 75
		75 yr	76-80 yr	> 80 yr	Total (Part in %)
2008	230467	1172	113	13	1298 (5.6)
2009	343468	1588	141	3	1732 (5.0)
2010	289120	1119	147	14	1280 (4.4)
2011	313982	1659	166	18	1843 (5.9)
2012	287818	1478	158	17	1653 (5.7)
2013	302392	1815	166	16	1997 (6.6)
2014	267342	1557	122	25	1704 (6.4)
2015	163976	2039	435	100	2574 (15.7)
2016	399039	1992	728	225	2945 (7.4)
2017	286039	1436	369	164	1969 (6.9)
Total	2883643	15855	2545	595	18995 (6.6)

Table 2 Distribution of 18704 elderly aged ≥ 75 years, according to the test performing contexts and history in Colorectal Cancer Screening Program, by year of campaign

Test achieving contexts	Campaign year
	Total	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017
Total	18704	1298	1721	1264	1815	1627	1966	1687	2525	2882	1919
Circumstances
Delayed response to solicitation	13442	1108	1509	982	1548	1363	1689	1496	814	1645	1288
Recommendation of a GP	5262	190	212	282	267	264	277	191	1711	1237	631
Average number of previous solicitation1	2.5 ± 1.3	1.2 ± 0.4	1.2 ± 0.5	1.3 ± 0.6	1.4 ± 0.8	1.8 ± 0.9	2.3 ± 0.9	2.5 ± 1.0	3.1 ± 1.1	3.2 ± 1.2	3.5 ± 1.3
Fidelity in CRCSP
Without anteriority	3829	1174	1339	417	164	114	80	76	99	212	154
Never participated	2197	57	157	278	384	212	200	143	183	330	253
< 30%	248	0	0	1	3	5	17	24	34	74	90
30%-50%	1824	4	28	50	130	205	312	268	236	324	267
50%-75%	1573	0	1	27	53	64	145	180	357	431	315
75%-100%	9033	63	196	491	1081	1027	1212	996	1616	1511	840
NLAI/refusal history1	277	3	5	8	25	25	28	32	40	59	52
Colonoscopy history in mailing response2	1378	10	22	44	106	97	138	155	271	300	235
History of positive test [T(+)]2
T(+) without colonoscopy	22	1	0	0	0	2	4	0	8	5	2
T(+) with normal colonoscopy	3	0	0	0	0	1	0	2	0	0	0
T(+) with colonoscopy (+)	175	0	0	0	4	3	16	19	39	51	43

This was about the first test for people who performed at least 2 tests after 74 years.

¹Persons without anteriority are excluded;

²Persons without anteriority or who have never participated in the previous Colorectal Cancer Screening Program are excluded. NLAI: Does Not Live at the Address Indicated; CRCSP: Colorectal Cancer Screening Program; GP: General Practitioner.

Table 3 Distribution of the 18995 tests performed by elderly aged ≥ 75 years, according to the circumstances of realization (It was about the circumstances of the first test for people who performed at least 2 tests after 74 years) and the results of the test

Results	Circumstances of realization		Total
	Delayed response after solicitation	Reco-mmen-dation of a pre-scriber doctor
Total tests performed after 74 yr	13596	5399	18995
Negative test	12529	3262	15791
Non-analyzable and non-restated test	559	1938	2497
Positive without colonoscopy	107	25	132
Positive with normal colonoscopy	147	62	209
Positive with colonoscopy (+)	254	112	366
Total lesions screened	254	112	366
Unspecified polyps	8	5	13
Low risk polyps	94	30	124
High risk polyps	109	50	159
Colorectal cancer	43	27	70

Table 4 Distribution of 18995 tests performed by elderly aged ≥ 75 years (elderly ≥ 75), according to the results of the test and year of screening

Results	Screening year
	Total	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017
Total test performed by elderly ≥ 75	18995	1298	1732	1280	1843	1653	1997	1704	2574	2945	1969
Test results
Negative test	15791	1227	1600	1204	1720	1549	1855	1590	1878	1837	1331
Non-analyzable and non-restated	2497	23	70	23	69	70	89	82	544	972	555
Positive without colonoscopy	132	13	13	11	5	7	10	9	16	25	23
Positive with normal colonoscopy	209	19	20	15	15	7	22	5	49	37	20
Positive with colonoscopy (+)	366	16	29	27	34	20	21	18	87	74	40
Type of lesions screened
Unspecified polyps	13	0	2	0	1	0	0	0	6	1	3
Low risk polyps	124	6	7	11	12	7	10	6	24	29	12
High risk polyps	159	5	13	10	16	7	5	7	44	33	19
Colorectal cancer	70	5	7	6	5	6	6	5	13	11	6

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Table 5 Colorectal cancer detection rate in the 11 districts and part of tests performed by elderly aged ≥ 75 years (elderly ≥ 75), by year of campaign

Campaign year	Tests performed in the 11 districts				Tests performed by elderly ≥ 75 in the 11 districts
	No. of tests (% of T+)	No. of colonoscopy (Completion rate in %)	No. of neoplasia (Detection rate in %)	No. of CRC (Detection rate in %)	No. of tests (% of T+)	No. of colonoscopy (Completion rate in %)	No. of neoplasia (Detection rate in %)	No. of CRC (Detection rate in %)
2008	230467 (2.7)	5392 (85.0)	3020 (13.1)	420 (1.8)	1298 (3.7)	35 (72.9)	16 (12.3)	5 (3.9)
2009	343468 (2.5)	7324 (83.7)	4025 (11.7)	609 (1.8)	1732 (3.6)	49 (79.0)	29 (16.7)	7 (4.0)
2010	289120 (2.5)	6117 (85.4)	3250 (11.2)	473 (1.6)	1280 (4.1)	42 (79.3)	27 (21.1)	6 (4.7)
2011	313982 (2.3)	6283 (86.9)	3327 (10.6)	458 (1.5)	1843 (2.9)	49 (90.7)	34 (18.4)	5 (2.7)
2012	287818 (2.1)	5010 (84.5)	2618 (9.1)	355 (1.2)	1653 (2.1)	27 (79.4)	20 (12.1)	6 (3.6)
2013	302392 (1.8)	4646 (84.7)	2420 (8.0)	325 (1.1)	1997 (2.7)	43 (81.1)	21 (10.5)	6 (3.0)
2014	267342 (1.9)	4146 (81.0)	2153 (8.1)	238 (0.9)	1704 (1.9)	23 (71.9)	18 (10.6)	5 (2.9)
2015	163976 (4.4)	6222 (85.8)	4107 (25.0)	474 (2.9)	2574 (5.9)	136 (89.5)	87 (33.8)	13 (5.1)
2016	399039 (4.7)	155109 (80.9)	9993 (25.0)	1126 (2.8)	2945 (4.6)	111 (81.6)	74 (25.1)	11 (3.7)
2017	286039 (4.4)	8928 (71.5)	5764 (20.2)	632 (2.2)	1969 (4.2)	60 (72.3)	40 (20.3)	6 (3.0)
Total	2883643 (2.9)	69177 (81.9)	40677 (14.1)	5110 (1.8)	18995 (3.7)	575 (81.3)	366 (19.3)	70 (3.7)

T+: Positive test; CRC: Colorectal cancer.