Double jeopardy--drug and sex risks among Russian women who inject drugs: initial feasibility and efficacy results of a small randomized controlled trial

Wechsberg, Wendee M; Krupitsky, Evgeny; Romanova, Tatiana; Zvartau, Edwin; Kline, Tracy L; Browne, Felicia A; Ellerson, Rachel Middlesteadt; Bobashev, Georgiy; Zule, William A; Jones, Hendrée E

doi:10.1186/1747-597X-7-1

Substance Abuse Treatment, Prevention, and Policy

Table 3 Regression Analyses With 3-Month Follow-up Behaviors as Outcomes and Controlling for Each Outcome Variable's Baseline Status*

From: Double jeopardy--drug and sex risks among Russian women who inject drugs: initial feasibility and efficacy results of a small randomized controlled trial

	Regression coefficient corresponding to the Baseline Status Parameter Estimate (SE)^a /Odds Ratio (95% CI)^b	Regression coefficient corresponding to the Intervention Group Parameter Estimate (SE) /Odds Ratio (95% CI)
	Parameter Estimate ( SE ) or Odds Ratio (95% CI )
Traded sex for drugs, money, clothing, shelter, or any other goods in past 90 days (yes)	1.02 (0.27-3.84) Wald Χ² = 0.001 (1), p = 0.98	0.92 (0.25-3.34) Wald Χ² = 0.02 (1), p = 0.90
Any protected last sex act with main sex partner (yes)	0.23 (0.05-1.00) Wald Χ² = 3.87 (1), p = 0.05	1.66 (0.46-6.03) Wald Χ² = 0.60 (1), p = 0.44
Mean number of unprotected vaginal sex acts with main sex partner in past 30 days	0.24 (0.09) t = 2.69 (1), p = 0.01	-4.56 (1.64) t = -2.77 (1), p = 0.008
Mean number of unprotected sex acts with sex- trading partner in past 30 days	-0.07 (0.25) t = -0.27 (1), p = 0.79	-9.18 (14.58) t = -0.63 (1), p = 0.54
Impaired last sex (yes)
Participant	0.18 (0.04-0.78) Wald Χ² = 5.26 (1), p = 0.02	1.43 (0.47-4.29) Wald Χ² = 0.40 (1), p = 0.53
Partner	0.17 (0.05-0.54) Wald Χ² = 9.13 (1), p = 0.003	0.31 (0.10-0.98) Wald Χ² = 3.97 (1), p = 0.05
Impaired last unprotected vaginal intercourse (yes)	0.02 (0.004-0.07) Wald Χ² = 30.75 (1), p < 0.0001	0.91 (0.22-3.83) Wald Χ² = 0.02 (1), p = 0.90
Mean number of injections in past 30 days	0.25 (0.12) t = 2.07 (1), p = 0.04	-3.90 (9.26) t = -0.42 (1), p = 0.67
Mean number of times used cotton, cooker/spoon, or rinse water used by someone else in past 30 days	0.01 (0.02) t = 0.57 (1), p = 0.57	-1.16 (0.83) t = -1.39 (1), p = 0.18
Mean number of times someone else used your cotton, cooker/spoon, or rinse water in past 30 days	0.01 (0.02) t = 0.36 (1), p = 0.72	-0.56 (0.69) t = -0.81 (1), p = 0.42
Mean number of times injected drugs mixed with water from someone else's syringe in past 30 days (i.e. syringe-mediated drug sharing)	0.01 (0.01) t = 0.48 (1), p = 0.63	-0.76 (0.47) t = -1.61 (1), p = 0.12
Mean number of days injected heroin in past 30 days	0.21 (0.24) t = 0.88 (1), p = 0.38	-1.27 (2.76) t = -0.46 (1), p = 0.65

*The regression has the form: Outcome = Intercept + b1* Baseline Status+ b2* Intervention Group + error or Logit[P(Outcome = 1)] = Intercept + b1* Baseline Status+ b2* Intervention Group
^a Table input for linear regression ^b Table input for logistic regression

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ISSN: 1747-597X

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