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3:·Number of patients (%) giving positive urine tests over three-month periods

6 Month data (n=36)
Illicit drug
0-3 months
3-6 months
P
Tranquillisers
20 (55.6%)
17 (47.2%)
0.5
Amphetamines
5 (13.8%)
1 (2.8%)
0.5
Barbiturates
1 (2.8%)
1 (2.8%)
0.5
"Crack"/cocaine
12 (33.3%)
8 (22.2%)
0.3
Opiates (codeine/morphine)
3 (23.1%)*
2 (15.4%)*
0.5

12 Month data (n=30)
Illicit drug
0-3 months
3-6 months
6-12 months
P (0-3 to 6-12)
P (3-6 to 6-12)
Tranquillisers
18 (60.0%)
11 (36.7%)
12 (40%)
0.27
0.3
Amphetamines
4 (13.3%)
0
1 (3.3%)
0.31
0.5
Barbiturates
1 (3.3%)
1 (3.3%)
1 (3.3%)
0.5
0.5
"Crack"/cocaine
10 (33.3%)
7 (23.3%)
8 (26.7%)
0.38
0.4
Opiates (codeine/morphine)
3 (30%)†
0†
2 (20%)†
0.5
0.25

*Data for those receiving injectable methadone (n=13).
†Data for those receiving injectable methadone (n=10).

N.B.
6 month data: Missing data for 4 patients, 8 discontinued treatment.
12 month data: Missing data for 5 patients, 25 discontinued treatment.

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