Page 175 - PhD GT

significance.
1 2 3
chi square
t-test for equality of the means of independent samples
drug
Sample 6
(n = 230)
66.1 33.9
80.9 19.1
29.5 11.6 15-80
8.8 10.8
4.4 6.3
5.7 2.5
.7 .5
174 146.7
20.2 7
8.2 3.5
9.9 5.7
Sample 6b
(n= 138)
63 37
73.9 26.1
30.6 11.8 15-80
9.8 11.2
5 7.3
5.5 2.5
.7 .5
181.3 155.5
19.5 7.4
7.9 3.6
9.1 5.6
not seen at t3
(n = 92)
70.7 29.3
87
13
27.9 11.2 17-80
7.3 10.1
3.6 4.3
5.8 4.3
.7 .4
160.5 130.2
21.3 6.2
8.7 3.2
11.2 5.8
p < (seen/not seen at t3)
ns1 .0071
ns1 .0011 .042
.052 ns2
ns2
ns2
ns2
ns3 ns3 .0073
Table 8.8
t1 measures for Sample 6, Sample 6b and the group not seen at t3
heroin (%)
alcohol (%)
gender
men (%)
women (%)
age mean SD
range
drug use
duration use (years) mean
SD
duration problem use (years) mean
SD
days per week mean
SD
grams heroin per day mean
SD
grams alcohol per day mean
SD
functioning variables
LDQ mean SD
GHQ mean SD
SSQ mean SD
Mann Whitney U test for difference in the means of independent samples
Alcohol and heroin use are similar in Sample 6b and the group not seen at twelve months, 170