“…Measuring HIV-risk in terms of the frequency of sexual and drug use behaviors in the past 30 days is only one way to measure HIV-risk when other measures including lifetime rates of behaviors, number of partners, engaging in sex work, and whether participants’ sexual partners are high risk (e.g., injection drug users, sex workers) might also indicate such risk. Twelve-step meeting attendance is one way of measuring involvement in groups like AA/NA, whereas a complete or categorical approach to involvement across a number of 12-step behaviors has been demonstrated as being a better measure of such involvement (Majer, Jason, Aase, Droege, & Ferrari, 2013; Majer, Droege, & Jason, 2012; Majer, et al, 2011). Finally, the use of self-reported data at one time-point is another limitation of the present study, as repeated measures design might have provided more information in relation to changes in predictor variables and abstinence self-efficacy over time.…”