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. 2015 Nov 18;5(11):e009238. doi: 10.1136/bmjopen-2015-009238

Table 2.

Summary of findings

Prescribing-based interventions
Litchfield (2010) Bellis (1993) Gunne (1986)
Number of participants 34 25 34
Study design Before/after Before/after Before/after
Intervention type Substitute prescribing Substitute prescribing Substitute prescribing
Levels of illicit drug use % urines testing positive for non-prescribed drugs
At baseline: 87% (95% CI 75.7% to 98.3%)
At 12 months: 72% (95% CI 56.91% to 87.09%)
% urines testing positive for non-prescribed drugs
At baseline: 80% (95% CI 64.32% to 95.68%)
At 12 months: 51% (95% CI 31.4% to 70.6%)
Women with urine samples consistently testing negative for non-prescribed drugs
At baseline: 0% (95% CI 0% to 0%)
Up to 220 months: 71% (55.75% to 86.25%)
Involvement in sex working Women reporting sex working
At baseline: 100% (95% CI 100% to 100%)
At 12 months: 33% (17.19% to 48.81%)
Not reported Women not involved in sex work
At baseline: 0% (95% CI 0% to 0%)
Up to 220 months: 71% (55.75% to 86.25%)
Levels of income from sex work   % income from sex work
At baseline: 78%(95% CI 61.76% to 94.24%)
At 12 months: 20% (95% CI 4.32% to 35.68%)
Levels of homelessness Not reported Not reported Not reported
Non prescribing-based interventions
Surrat (2010) Sherman (2006) Yahne (2002)
Number of participants 806 50 27
Study design RCT Before/after Before/after
Intervention type Educational Educational Psychological
Levels of illicit drug use 3 months: OR 1.17 (0.84 to 1.66)
6 months: OR 1.14 (0.8 to 1.61)
% women reporting daily drug use:
At baseline: 76% (95% CI 64.16% to 87.84%)
At 3 months: 55% (95% CI 41.21% to 68.79%)
Reported days abstinent in last 30 days
At baseline: 15% (95% CI 1.53% to 28.47%)
At 4 months: 51% (95% CI 32.14% to 69.86%)
p Value (where given) 0.003 <0.001
Involvement in sex working 3 months: OR 0.944 (0.67 to 1.32)
6 months: OR 1.14 (0.79 to 1.65)
Median clients/month
At baseline: 9
At 3 months 3
% days sex worked in last 30 days
At baseline: 59% (95% CI 40.45% to 77.55%)
At 4 months: 17% (95% CI 2.83% to 31.17%)
p Value (where given) 0.025 <0.0001
Levels of homelessness Women reporting homelessness at study entry
Usual care: 42.9%
Intervention group: 41%
27% reported homelessness in 3 months prior to study Not reported