Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

199 questions · 208 findings · 27 reviews · Drugs and Alcohol

No studies found 5 · 2.4%GRADE not reported 6 · 2.9%Very low 45 · 21.6%Low 79 · 38%Moderate 59 · 28.4%High 14 · 6.7%

Buprenorphine vs alpha2‐adrenergic agonists

Number with treatment stopped due to adverse effects · Adults or adolescents with opioid dependence

Buprenorphine showed no clear difference in number with treatment stopped due to adverse effects compared with alpha2‐adrenergic agonists (low certainty).

1 finding from 1 review

Antidepressants vs placebo according to any definition

Dropout ‐ Dropouts: excluding studies with high risk of bias objective · patients with cocaine abuse and dependence

Antidepressants showed no clear difference in dropout ‐ Dropouts: excluding studies with high risk of bias objective compared with placebo according to any definition (moderate certainty).

1 finding from 1 review

Buprenorphine vs clonidine

Drop‐out (end of treatment) · patients with opiate dependent adolescents

Buprenorphine showed no clear difference in drop out Number of participants who did not complete the… compared with clonidine (moderate certainty).

1 finding from 1 review