Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,434 questions · 2,594 findings · 269 reviews

No studies found 543 · 20.9%GRADE not reported 191 · 7.4%Very low 676 · 26.1%Low 732 · 28.2%Moderate 399 · 15.4%High 53 · 2%

Primary health professional‐led psychological interventions vs usual care or no treatment

Functional impairment · adults with post‐traumatic stress or common mental disorders

It is very uncertain whether primary health professional‐led psychological interventions changes functional impairment (1 to 6 months post intervention) Locally… compared with usual or no care (very low certainty).

1 finding from 1 review

Primary health professional‐led psychological interventions vs usual care or no treatment

Adverse events (RR > 1 denotes greater risk of harm) · adults with post‐traumatic stress or common mental disorders

It is very uncertain whether primary health professional‐led psychological interventions changes adverse events (RR > 1 denotes greater risk of harm) compared with usual or no care (very low certainty).

1 finding from 1 review

Lay health worker‐led interventions for adult patients with harmful or hazardous alcohol or substance use vs enhanced usual care

Clinical recovery ‐ harmful or hazardous alcohol use (1 to 6 months post intervention) · adult patients with harmful or hazardous alcohol or substance use

Lay health worker‐led interventions for adult patients with harmful… showed no clear difference in clinical recovery ‐ harmful or hazardous alcohol use (1 to 6 months… compared with enhanced usual care (low certainty).

1 finding from 1 review

Lay health worker‐led interventions for adult patients with harmful or hazardous alcohol or substance use vs enhanced usual care

Prevalence of methamphetamine use (1 to 6 months post intervention) (RR < 1 denotes lower prevalence compared to control) · adult patients with harmful or hazardous alcohol or substance use

Lay health worker‐led interventions for adult patients with harmful… showed no clear difference in prevalence of methamphetamine use (1 to 6 months post intervention)… compared with enhanced usual care (low certainty).

1 finding from 1 review

Lay health worker‐led interventions for adult patients with harmful or hazardous alcohol or substance use vs enhanced usual care

Clinical symptoms ‐ alcohol use (1 to 6 months post intervention) ‐ risk of hazardous or harmful alcohol use · adult patients with harmful or hazardous alcohol or substance use
1 finding from 1 review

Lay health worker‐led interventions for adult patients with harmful or hazardous alcohol or substance use vs enhanced usual care

Clinical symptoms ‐ alcohol and substance use (1 to 6 months post intervention) · adult patients with harmful or hazardous alcohol or substance use
1 finding from 1 review

Lay health worker‐led psychological interventions vs usual care

Functional impairment ‐ not measured · adults with common mental disorders

Lay health worker‐led psychological interventions showed no clear difference in functional impairment/disability ‐ intermediate term (1 to 6 months… compared with usual care (low certainty).

1 finding from 1 review

Lay health worker‐led interventions for adult patients with harmful or hazardous alcohol or substance use vs enhanced usual care

Quality of life · adult patients with harmful or hazardous alcohol or substance use

The review found no eligible studies for this question.

1 finding from 1 review

Lay health worker‐led interventions for adult patients with harmful or hazardous alcohol or substance use vs enhanced usual care

Service utilisation ‐ unplanned hospitalisations (1 to 6 months post intervention) (RR < 1 denotes lower risk) · adult patients with harmful or hazardous alcohol or substance use

It is very uncertain whether lay health worker‐led interventions for adult patients with harmful… changes service utilisation ‐ unplanned hospitalisations (1 to 6 months post… compared with enhanced usual care (very low certainty).

1 finding from 1 review

Lay health worker‐led interventions for adult patients with harmful or hazardous alcohol or substance use vs enhanced usual care

Adverse events ‐ death in past 12 months (RR > 1 denotes higher risk of death) · adult patients with harmful or hazardous alcohol or substance use

It is very uncertain whether lay health worker‐led interventions for adult patients with harmful… changes adverse events ‐ deaths (RR < 1 denotes lower risk) compared with enhanced usual care (very low certainty).

1 finding from 1 review

Primary health professional‐ and community professional‐led interventions vs enhanced usual care

Clinical recovery ‐ harmful or hazardous alcohol use (1 to 6 months post intervention) · adult patients with harmful or hazardous alcohol or substance use

Primary health professional‐ and community professional‐led… showed no clear difference in clinical recovery ‐ harmful or hazardous alcohol use (1 to 6 months… compared with enhanced usual care (moderate certainty).

1 finding from 1 review

Primary health professional‐ and community professional‐led interventions vs enhanced usual care

Cannabis use · adult patients with harmful or hazardous alcohol or substance use

It is very uncertain whether primary health professional‐ and community professional‐led… changes prevalence of cannabis use (1 to 6 months post intervention) (RR < 1… compared with enhanced usual care (very low certainty).

1 finding from 1 review

Primary health professional‐ and community professional‐led interventions vs enhanced usual care

Clinical symptoms ‐ alcohol use (1 to 6 months post intervention) ‐ risk of hazardous or harmful alcohol use · adult patients with harmful or hazardous alcohol or substance use
1 finding from 1 review

Primary health professional‐ and community professional‐led interventions vs enhanced usual care

Clinical symptoms ‐ overall risk of harmful or hazardous alcohol and substance use (1 to 6 months post intervention) · adult patients with harmful or hazardous alcohol or substance use
1 finding from 1 review

Primary health professional‐ and community professional‐led interventions vs enhanced usual care

Quality of life (1 to 6 months post intervention) · adult patients with harmful or hazardous alcohol or substance use

Primary health professional‐ and community professional‐led… showed no clear difference in quality of life (1 to 6 months post intervention) compared with enhanced usual care (moderate certainty).

1 finding from 1 review

Lay health worker‐led psychological interventions vs usual care

Service utilisation · adults with common mental disorders

It is very uncertain whether lay health worker‐led psychological interventions changes service utilisation (1 to 6 months post intervention) compared with usual care (very low certainty).

1 finding from 1 review

Primary health professional‐ and community professional‐led interventions vs enhanced usual care

Adverse events (1 to 6 months post intervention) ‐ incidence of alcohol‐related consequences ‐ accidents (RR > 1 denotes greater risk) · adult patients with harmful or hazardous alcohol or substance use

It is very uncertain whether primary health professional‐ and community professional‐led… changes adverse events (1 to 6 months post intervention) ‐ incidence of… compared with enhanced usual care (very low certainty).

1 finding from 1 review