Treatment retention in opioid agonist therapy: comparison of methadone versus buprenorphine/naloxone by analysis of daily-witnessed dispensed medication in a Canadian Province

Table 1 Study population characteristics, by age group, medication type, stimulant use history, sex

Age	Freq.	%	Cum. %	OAT Medication		Stimulant use hx		Sex
Age	Freq.	%	Cum. %	Methadone	Bup/Nx	No	Yes	M	F
18–19	41	2.17	2.17	22	19	27	14	16	25
20–24	320	16.97	19.14	241	79	238	82	162	158
25–29	432	22.91	42.05	359	73	314	118	248	184
30–34	333	17.66	59.70	274	59	236	97	216	117
35–39	282	14.95	74.66	230	52	212	70	183	99
40–44	181	9.60	84.25	148	33	148	33	121	60
45–49	119	6.31	90.56	102	17	98	21	88	31
50–54	95	5.04	95.60	85	10	89	6	76	19
55–59	56	2.97	98.57	44	12	52	4	46	10
60+	27	1.43	100	22	5	24	3	19	8
Total	1886	100		1527 (81%)	359 (19%)	1438	448	1175	711

ISSN: 1471-244X