Table 1.

Sociodemographic and opioid use characteristics related to consumption patterns of patients in treatment for opioid use (n = 3325).

	Total		New patients (n = 393)		Old patients (n = 2932)		P unadjusted	P adjusted c
	n	%	N	%	n	%
Sex
Men	2669	80.3	318	80.9	2351	80.2
Women	656	19.7	75	19.1	581	19.8	.787	.983
Age (years)
⩽35	738	22.2	152	38.7	586	20.0
36-49	1688	50.8	171	43.5	1517	51.8
⩾50	898	27.0	70	17.8	828	28.2	<.001	<.001
Country of birth
Spanish	2546	79.0	257	65.9	2289	80.9
Other	675	21.0	133	34.1	542	19.1	<.001	<.001
Employment status
Working	780	23.5	103	26.2	677	23.1
Not working	2545	76.6	290	73.8	2255	76.9	.297	.543
Education level
Primary or less	1591	47.8	210	53.4	1381	47.1
Secondary or more	1734	52.2	183	46.6	1551	52.9	.02	.15
Place of residence
House or apartment	2268	68.2	295	75.1	1973	67.3
Others a	1057	31.8	98	24.9	959	32.7	.002	.414
Living situation
Alone	722	21.7	78	19.8	644	22.0
Family	1650	49.6	236	60.1	1414	48.3
Others b	953	28.7	79	20.1	874	29.8	<.001	.1
Marital status
Married/married in fact	622	18.7	109	27.7	513	17.5
Other	2703	81.3	284	72.3	2419	82.5	<.001	.002
Children
Yes	780	23.5	72	18.3	708	24.1
No	2545	76.5	321	81.7	2224	75.9	.011	.088
Source of reference to addiction center
Own initiative	1831	55.1	226	57.5	1605	54.7
Others’ initiative	1494	44.9	167	42.6	1327	45.3	.001	.008
Primary opioid of use
Heroin	3122	93.9	332	84.5	2790	95.2
Non-heroin	203	6.1	61	15.5	142	4.8	<.001	<.001
Age of initial consumption (years)
⩽24	2131	70.2	172	47.0	1959	73.4
>24	903	29.8	194	53.0	709	26.6	<.001	<.001
Frequency of use
Every day	1828	55.0	298	75.8	1530	52.2
Not every day	1497	45.0	95	24.2	1402	47.8	<.001	<.001
Injection
Yes	534	16.1	42	10.7	492	16.8
No	2791	83.9	351	89.3	2440	83.2	.002	.008
Addicted to 2 substances
No	1767	53.1	230	58.5	1537	52.4
Yes	1558	46.9	163	41.5	1395	47.6	.026	.006
Use of cocaine (past month)
Yes	1502	45.2	153	38.9	1349	46.0
No	1823	54.8	240	61.1	1583	54.0	.01	.006
Use of cannabis (past month)
Yes	310	9.3	28	7.1	282	9.6
No	3015	90.7	365	92.9	2650	90.4	.11	.042
Use of alcohol (past month)
Yes	284	8.5	24	6.1	260	8.9
No	3041	91.5	369	93.9	2672	91.1	.117	.017
HIV
Yes	531	16.0	16	4.1	515	17.6
No/unknown	2794	84.0	377	95.9	2417	82.4	<.001	.01
HCV
Yes	1190	35.8	46	11.7	1144	69.0
No/unknown	2135	64.2	347	88.3	1788	61.0	<.001	<.001

^aInstitutions or homeless.

^bInstitutions, friends, or others.

^cAdjusted by: Age, sex, country of birth, place of residence, and marital status; HIV; Opioid; Frequency of use and method.