Table 2

Association between sociodemographic and behavioural factors and overall participation in MemoDepistages first screening, 2018 (n=7158)

	Overall participation						Acceptance (n=3428)					Return (n=1948)
	N	n	%	ORa	P value	95% CI	n	%	ORa	P value	95% CI	n	%	ORa	P value	95% CI
Age
Under 30 years	3082	897	29.1	Ref			1570	50.9	Ref			897	57.1	Ref
30 years and over	4076	1051	25.8	0.83	<10⁻³	0.74 to 0.92	1858	45.6	0.79	<10⁻³	0.72 to 0.88	1051	56.6	0.97	0.642	0.84 to 1.12
P value			0.002					<10⁻³					0.738
Born in France
Yes	6549	1766	27.0	Ref			3131	47.8				1766	56.4	Ref
No	609	182	29.9	1.07	0.475	0.89 to 1.29	297	48.8				182	61.3	1.11	0.402	0.87 to 1.43
P value			0.122					0.650					0.105
Level of education
High school or less	2242	472	21.1	0.66	<10⁻³	0.58 to 0.75	990	44.2	0.80	<10⁻³	0.72 to 0.89	472	47.7	0.65	<10⁻³	0.56 to 0.76
College or more	4916	1476	30.0	Ref			2438	49.6	Ref			1476	60.5	Ref
P value			<10^–3					<10 ⁻³					<10 ⁻³
Perceived financial situation
Good	3342	928	27.8	Ref			1538	46.0	Ref			928	60.3	Ref
Average	2534	709	28.0	1.05	0.408	0.93 to 1.18	1243	49.1	1.13	0.023	1.02 to 1.40	709	57.0	0.94	0.421	0.80 to 1.10
Bad	1281	311	24.3	0.91	0.229	0.78 to 1.06	647	50.5	1.22	0.005	1.06 to 1.40	311	48.1	0.70	<10⁻³	0.58 to 0.86
P value			0.033					0.008					<10⁻³
Area of residence
Fewer than 2000 inhabitants	380	96	25.3	0.99	0.938	0.77 to 1.27	157	41.3	0.81	0.097	0.65 to 1.00	96	61.2	1.30	0.143	0.92 to 1.84
Between 2000 and 19 999 inhabitants	1277	312	24.4	0.93	0.355	0.80 to 1.08	610	47.8	1.06	0.409	0.93 to 1.21	312	51.2	0.82	0.050	0.68 to 1.00
Between 20 000 and 99 999 inhabitants	1775	464	26.1	0.97	0.632	0.85 to 1.10	847	47.7	1.04	0.550	0.92 to 1.16	464	54.8	0.90	0.207	0.76 to 1.06
More than 100 000 inhabitants	3726	1076	28.9	Ref			1814	48.7	Ref			1076	59.3	Ref
P value			0.008					0.056					0.002
Region
Paris area	4220	1188	28.2	Ref			2051	48.6	Ref			1188	57.9	Ref
Auvergne Rhône Alpes	1525	440	28.9	1.13	0.076	0.99 to 1.29	738	48.4	1.06	0.380	0.94 to 1.19	440	59.6	1.18	0.072	0.56 to 0.76
Provence Alpes Côte d’Azur	867	195	22.5	0.83	0.045	0.70 to 0.99	380	43.8	0.09	0.097	0.76 to 1.02	195	51.3	0.84	0.126	0.99 to 1.41
Occitanie	546	125	22.9	0.86	0.157	0.69 to 1.06	259	47.4	1.00	0.948	0.84 to 1.21	125	48.3	0.77	0.062	0.67 to 1.05
P value			<10^–3					0.079					0.001
Frequenting gay meeting places (with or without sex)
Often	1974	568	28.8	Ref			1020	51.7	Ref			568	55.7
Sometimes	3669	1022	27.9	0.94	0.633	0.72 to 1.22	1763	48.1	0.77	0.028	0.60 to 0.97	1022	58.0
Never	1515	358	23.6	0.72	0.028	0.53 to 0.96	645	42.6	0.65	0.001	0.50 to 0.84	358	55.5
P value			0.001					<10⁻³					0.379
Number of male sex partners in the past 12 months
2–5	2283	552	24.2	Ref			1006	44.1	Ref			552	54.9	Ref
6–10	1918	551	28.7	1.20	0.230	0.89 to 1.63	973	50.7	1.21	0.173	0.92 to 1.60	551	56.6	1.02	0.828	0.85 to 1.22
11–20	1507	451	29.9	1.06	0.706	0.78 to 1.45	735	48.8	0.84	0.229	0.64 to 1.11	451	61.4	1.29	0.013	1.05 to 1.57
>20	1450	394	27.2	1.07	0.656	0.80 to 1.43	714	49.2	1.00	0.997	0.77 to 1.30	394	55.2	0.98	0.872	0.80 to 1.20
P value			<10⁻³					<10⁻³					0.036
Last partner
Steady	1540	416	27.0				749	48.6				416	55.5
Casual	5618	1532	27.3				2679	47.7				1532	57.2
P value			0.841					0.508					0.422
Protection at last intercourse
No	3156	832	26.4	Ref			1520	48.2				832	54.7	Ref
Yes	4002	1116	27.9	1.01	0.820	0.91 to 1.13	1908	47.7				1116	58.5	1.09	0.230	0.95 to 1.25
P value			0.150					0.683					0.028
Tested for HIV
Several times in the past 12 months	1838	508	27.6	0.86	0.045	0.74 to 0.99	875	47.6	0.87	0.040	0.76 to 0.99	508	58.1	0.91	0.330	0.75 to 1.10
Once in the past 12 months	1686	507	30.1	Ref			849	50.4	Ref			507	59.7	Ref
At least once, >12 months ago	2791	733	26.3	0.87	0.042	0.76 to 0.99	1342	48.2	0.92	0.204	0.82 to 1.04	733	54.6	0.87	0.128	0.73 to 1.04
Never	843	200	23.7	0.78	0.012	0.64 to 0.95	362	42.9	0.74	0.001	0.62 to 0.88	200	55.3	0.93	0.606	0.72 to 1.21
P value			0.004					0.006					0.091

ORa, adjusted OR.