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. Author manuscript; available in PMC: 2009 Aug 1.
Published in final edited form as: Res Nurs Health. 2008 Aug;31(4):329–340. doi: 10.1002/nur.20263

Table 4.

Predictors for Unprotected Vaginal Sex

Parameter Coefficient Standard Error z Value p Value
Logistic Regression
Intercept −5.17 1.35 −3.84 <.001
Confidence 0.21 0.07 3.19 <.001
Poisson Regression Part
Number of Drinking Days −0.05 0.01 −4.56 <.001
Binge Drinking 0.04 0.01 3.12 <.001
Average # Drinks/Drinking Day −0.06 0.01 −4.24 <.001
Ecstasy Use 0.55 0.07 7.60 <.001
Opiate Use 0.26 0.08 3.27 <.001
Protected Vaginal Sex 3 months prior to baseline −0.01 0.00 −3.57 <.001
Intercept 3.09 0.06 55.83 <.001