Skip to main content
. Author manuscript; available in PMC: 2017 Oct 26.
Published in final edited form as: Lancet Glob Health. 2016 Dec 8;5(2):e198–e207. doi: 10.1016/S2214-109X(16)30303-5

Table 2.

Unadjusted probability of no drug relapse using urine drug testing

Days from release No opioid use
No illicit drug use
Voluntary treatment centres Compulsory drug detention centres Voluntary treatment centres Compulsory drug detention centres
Month
1 30 0.90
(0.81–0.95)		 0.51
(0.39–0.61)		 0.89
(0.79–0.94)		 0.46
(0.35–0.57)
3 90 0.80
(0.68–0.88)		 0.23
(0.14–0.33)		 0.78
(0.66–0.87)		 0.19
(0·11–0.28)
6 180 0.69
(0·55–0.79)		 0.19
(0.11–0.28)		 0.62
(0.48–0.73)		 0.12
(0.06-0.20)
9 270 0.62
(0.48–0.73)		 0.12
(0.05–0.21)		 0.53
(0.39–0.66)		 0.07
(0.02–0.16)
12 365 0.50
(0.34–0.64)		 0.10
(0.04–0.19)		 0.42
(0.27–0.56)		 0.05
(0.01–0.13)

Unadjusted Kaplan Meier estimates (95% CIs) reflecting the cumulative probability of no drug relapse for selected follow-up times.