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8.2 Sample 6a: questionnaire and interview results at t1
Of the original sample of 230 individuals, 83.5% were accounted for at three month follow-up. Of these, 151 (65.7% of the original sample) agreed to participate in follow-up: 116 were men (63.7% of the original sample of men) and 35 were women (72.9% of the original sample of women). Of the original sample of 152 heroin users, 62.5% were seen and of the original sample of 78 alcohol users, 71.8% were seen (see Table 8.4).
Table 8.4 Percentages of Sample 6 seen at three months and at twelve months by drug use and gender, and mean age: Sample 6, Sample 6a and Sample 6b
Drug group
Sample 6
(n = 230)
152 78
182 48 29.5
Sample 6a
(n = 151)
95 56
116
35
30.9 11.8 17-80
% of Sample 6
(66%)
63 72
64 73
Sample 6b
(n = 138)
87 51
102
36
30.6 11.8 15-80
% of Sample 6
(60%)
57 65
56 75
Heroin Alcohol Gender Male Female Age
mean SD range
The mean age of Sample 6a was 30.9 (SD = 11.8) with a range of 17 to 80 years. The mean age of the heroin sub-sample was 24.7 (SD = 5.7) with a range of 17 - 47 years and the mean age of the alcohol sub-sample was 41.5 (SD = 2.1) with a range of 19 - 80 years. Thus the mean age of the sample that was seen at three month follow-up in both substance groups was greater by approximately one year than the mean age of the entire t1 sample, Sample 6.
8.2.1 Comparison between Sample 6a and the group that did not participate in follow-up at three months: questionnaire and interview results t1.
Table 8.5 shows a number of differences in demographic data, substance use, dependence, psychological health and social satisfaction data collected at t1 for the samples that did and did not participate in follow-up at three months.
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