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. Author manuscript; available in PMC: 2017 Sep 1.
Published in final edited form as: Addict Behav. 2016 Apr 9;60:97–102. doi: 10.1016/j.addbeh.2016.03.022

Table 4.

Standardized coefficients testing the effects of interactions between substance use variables on RSBs.

β (SE)
Condom use in the past 90 days Used a condom at last sex Sex while high in the past 90 days Number of sexual partners
Alcohol×Cocaine within subjects .034 (.015)* .031 (.015)* −.023 (.020) −.025 (.016)
between subjects .508 (.919) .989 (.843) .554 (.850) .056 (.619)
Alcohol×Marijuana within subjects .056 (.010)*** .061 (.010)*** .118 (.013)*** −.044 (.011)***
between subjects .038 (.092) .223 (.084)** .236 (.092)* −.099 (.060)
Cocaine×Marijuana within subjects .044 (.016)** .047 (.014)** −.054 (.020)* −.008 (.017)
between subjects −.341 (.565) .402 (.502) −.442 (.562) .321 (.400)

Note:

*

= p < .05,

**

= p < .01,

***

= p < .001. Covariates are age, gender, and neighborhood. Unshaded cells represent additive effects, darker cells represent antagonizing effects, and lighter cells represent redundant effects.