LAUSR

OBJECTIVE Despite evidence that social support is beneficial for people living with opioid use disorders (OUDs), research has yet to investigate whether social support within certain relationships is more or less effective. The current study examined whether social support, relationship closeness with a disclosure partner, and/or the history of joint substance use between participants and disclosure partners affect commitment to sobriety among people receiving medications for OUD. METHOD Over a period of 3 months (two time points), participants taking OUD medications took part in a mixed-methods egocentric social network study exploring their relationships with disclosure partners before and following OUD disclosure (i.e., first telling a disclosure partner about one's OUD history or treatment). Data included 131 disclosure events/relationships clustered within 106 participants. RESULTS Greater relationship closeness was associated with increased commitment to sobriety over time. Further, significant interactions were found between social support and disclosure partner closeness, partner closeness and history of joint substance use, and social support and history of joint substance use. Higher social support was associated with greater commitment to sobriety among those disclosing to close partners. In contrast, receiving social support or disclosing to a close partner with whom there was a history of joint substance use was associated with decreased commitment to sobriety. CONCLUSIONS Findings highlight the complexities of social support among people in treatment for OUD and demonstrate that relationship closeness and a history of joint substance use with a disclosure partner may be important factors to consider before disclosure.