Alcohol dependence n=64 *Alcohol and opiate dependence n=31   P value
Mean age, years (95% C.I.) 42.1(39.3-44.8) 31.6
(29.6-33.6)
<0.0001a
Male, % (n) 63 (40) 84 (26) 0.03b
Mean alcohol units per day
(95% C.I.)
24.5 (22.2-26.7) 27.2 (24.2-30.1)   NS
Planned discharges, at 2 year follow up, % (n) 20 (13) 0 (0) 0.0008c
Initial CGI-S score (95% C.I.) 4.7 (4.5-4.8) 4.5 (4.3-4.8) NS
2 year CGI-S score (95% C.I.) 4.1 (3.8-4.5) 4.5 (4.2-4.9) NS
2 year CGI-Imp score (95% C.I.) 4.3 (3.9-4.7) 5.1 (4.6-5.5) 0.01d
Mean time to re-admission, days (95% C.I.) 536 days (472-600) 595 days (517-673) NS
*Maintained on opiate substitute prescription (methadone or buprenorphine)
a2-sided t =5.0. d.f. =93, p<0.0001
bχ2=4.5. d.f. =1, p=0.03
cχ2=14.3. d.f. =2, p=0.0008
d2-sided t =2.5. d.f. =90, p=0.01
Table 1: Clinical and record profile of alcohol dependent patients with or without opiate dependency.