Parsons 2009.

Methods	RCT.
Participants	143 HIV‐positive men and women who were on antiretroviral medication and met criteria for hazardous drinking. USA.
Interventions	MI + cognitive‐behavioral skills building (n= 65) vs a time‐ and content‐equivalent educational condition (n= 78).
Outcomes	Physiological primary: None. Non‐physiological primary: Standard drinks in the past and drinks per drinking day. Secondary: Medication adherence. Follow‐up at baseline and at 3‐ and 6‐month follow‐ups.
Notes	Intervention is known as Project PLUS (Positive Living Through Understanding and Support).
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Urn randomisation procedures were used.
Allocation concealment (selection bias)	Unclear risk	Insufficient information to permit judgement.
Blinding (performance bias and detection bias) Patients and providers	Unclear risk	Blinding of providers was not possible, but participants could have been blinded.
Blinding (performance bias and detection bias) Assessors	Unclear risk	It is not stated whether assessors were blinded.
Incomplete outcome data (attrition bias) All outcomes	Low risk	"An intent‐to‐treat analysis was used in which participants who completed the first follow‐up assessments were analyzed according to their original assigned study condition irrespective of the number of sessions attended." Attrition was 9% at the 3‐month follow‐up and 10% at the 6‐month follow‐up with no significant difference in attrition between the 2 conditions. Reasons for attrition provided.
Selective reporting (reporting bias)	Low risk	The published report included all expected outcomes based on the stated hypotheses.
Other bias	Unclear risk	Only self‐reported outcomes. Differences between groups at baseline were not reported.