Baseline
(N=48)
4-month Follow-up
(N=45)
CMH11 p 8-month Follow-up
(N=45)
CMH11 p
Drug Use              
UA Results              
Opiates 0.0% 4.4% na na 11.1% na na
Cocaine 20.8% 20.0% 0.14 0.71 13.3% 1.29 0.26
Amphetamine 81.3% 40.0% 11.57 <.001 44.4% 11.64 <.001
Meth 100.0% 53.3% na na 53.3% na na
Times injected last 30 days 17.29+25.86 11.33+21.27 1.902 0.06 10.07+21.63 1.453 0.15
Times injected meth last 30 days 16.23+24.92 9.16+19.49 2.304 0.03 6.61+11.49 2.045 0.048
Times used meth (non-inj) last 30 days 41.13+83.16 10.76+18.85 2.166 0.04 10.25+25.65 2.327 0.03
Needle Risk8              
Use dirty syringe 27.0% 4.0% 7.00 0.008 26.1% 0.00 1.00
Use dirty cooker, cotton, water 29.7% 24.0% 1.80 0.18 34.8% 0.00 1.00
Split drug solution with others 43.2% 32.0% 1.60 0.21 52.2% 0.50 0.48
Sex Risk              
Any sex last 30 days 85.4% 71.1% 3.60 0.06 71.1% 2.57 0.11
Sex with multiple partners 16.7% 15.6% 0.08 0.78 15.6% 0.00 1.00
Sex under the influence 77.1% 57.8% 3.56 0.06 55.6% 3.86 0.049
Unprotected sex 56.3% 57.8% 0.08 0.78 60.0% 0.06 0.81
McNemar’s tests for dichotomous variables and paired t-tests for continuous variables were used to compare between baseline and follow-up. Statistics and p-values are bolded when p < 0.05. 1Cochran-Mantel-Haenszel statistic, distributed as x21 2t44 3t44 4t42 5t43 6t36 7t428 Defined for injectors only: N=37, 25, and 23 at baseline, 4 months and 8 months, respectively
Table 3: Drug Use and Needle Risk at Baseline and Follow-up for those with a Follow-up Measurement (% or mean ± S.D.).
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