Maisto 2001.

Methods	Multisite RCT (12 sites).
Participants	301 hazardous alcohol using elderly US patients who presented for treatment at a primary care clinic.
Interventions	1. MET (n= 101) 2. brief advice (n= 100) 3. standard care (n= 100).
Outcomes	Physiological primary: None. Non‐physiological primary: Days abstinent, number of drinks, drinks per drinking day, days 1‐6 drinks. Secondary: Readiness to change (Stages of Change Readiness and Treatment Eagerness Scale [SOCRATES]). Data not reported. Follow‐up at 1,3,6,9, and 12 months.
Notes	We do not have follow‐up data on 1, 3, and 9 months.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Random numbers table.
Allocation concealment (selection bias)	Low risk	"The schedule was kept in an envelope in a locked drawer and was used only by the project coordinator."
Blinding (performance bias and detection bias) Patients and providers	High risk	No blinding.
Blinding (performance bias and detection bias) Assessors	Unclear risk	It is not stated whether the assessors were blinded.
Incomplete outcome data (attrition bias) All outcomes	High risk	Attrition was 5%, 8%, 14%, 15%, and 17% at 1 month, 3 months, 6 months, 9 months, and 12 months, respectively. Reasons for loss not reported. We don't know if loss was balanced across groups. No ITT reported.
Selective reporting (reporting bias)	Low risk	The published report included all expected outcomes based on the study hypotheses.
Other bias	Low risk	Collateral reports were used to check on self‐report. There were no differences between groups at baseline. No additional sources of bias appear to be present.