Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

831 questions · 877 findings · 52 reviews · Effective Practice and Organisation of Care

No studies found 288 · 32.8%GRADE not reported 30 · 3.4%Very low 210 · 23.9%Low 214 · 24.4%Moderate 97 · 11.1%High 38 · 4.3%

Lay health worker‐led psychosocial interventions vs enhanced usual care

Service utilisation ‐ maternal or child hospitalisations ‐ intermediate term (1 to 6 months post intervention) · women with perinatal depression

It is very uncertain whether lay health worker‐led psychosocial interventions changes service utilisation ‐ maternal or child hospitalisations ‐… compared with enhanced usual care (very low certainty).

1 finding from 1 review

Lay health worker‐led psychological interventions vs usual care

Recovery from CMD ‐ intermediate term (1 to 6 months post intervention) Recovery defined by GDS ≤ 11a; HDRS < 7b; HDRS < 8c; PHQ‐9 < 6d; PHQ‐9 < 5 or 50% reduction from baselinee (RR > 1 denotes greater likelihood of recovery) · adults with common mental disorders

Lay health worker‐led psychological interventions may leads to higher recovery from CMDs ‐ intermediate term (1 to 6 months post… compared with usual care (low certainty).

1 finding from 1 review

Lay health worker‐led psychological interventions vs usual care

Prevalence of CMDs ‐ intermediate term (1 to 6 months post intervention) Diagnosis defined by SRQ‐20 > 7b; PHQ‐9 ≥ 11d (RR < 1 denotes lower prevalence compared to control) · adults with common mental disorders

Lay health worker‐led psychological interventions may leads to lower prevalence of CMDs ‐ intermediate term (1 to 6 months post… compared with usual care (low certainty).

1 finding from 1 review

Lay health worker‐led psychological interventions vs usual care

Severity of CMD symptoms (including anxiety and depression) ‐ intermediate term (1 to 6 months post intervention) Measured by PHQ‐9a,d,f; SRQ‐20b (higher score, higher severity) · adults with common mental disorders
1 finding from 1 review

Lay health worker‐led psychological interventions vs usual care

PTS symptoms ‐ intermediate term (1 to 6 months post intervention) PCL‐5a,d,e; PCL‐6f; Post‐traumatic Stress Diagnostic Scaleb (higher score = higher severity) · adults with post‐traumatic stress and CMDs
1 finding from 1 review

Lay health worker‐led psychological interventions vs usual care

Depression symptoms ‐ intermediate term (1 to 6 months post intervention) GHQ‐12a; PHQ‐9d,e,f; self‐reporting questionnaireh (higher score = higher severity) · adults with post‐traumatic stress and CMDs
1 finding from 1 review

Lay health worker‐led psychological interventions vs usual care

Quality of life ‐ intermediate term (1 to 6 months post intervention) EQ‐5Di; SF‐36c,m; WHOQOL‐BREFe,j,n (higher score = better quality of life) · adults with post‐traumatic stress and CMDs
1 finding from 1 review

Lay health worker‐led psychological interventions vs usual care

Hospital admissions · adults with post‐traumatic stress and CMDs

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

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 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‐led psychological interventions vs usual care or no treatment

Prevalence of adults with probable PTSD (1 to 6 months post intervention) Diagnosis defined by HTQ ≥ 1.75 (RR > 1 denotes lower prevalence compared to control) · adults with post‐traumatic stress or common mental disorders

Primary health professional‐led psychological interventions may leads to higher prevalence of adults with probable PTSD (1 to 6 months post… compared with usual or no care (low certainty).

1 finding from 1 review

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

Anxiety and depression · adults with post‐traumatic stress or common mental disorders

Primary health professional‐led psychological interventions may leads to higher prevalence of adults with probable depression or anxiety (1 to 6… compared with usual or no care (low certainty).

1 finding from 1 review

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

Severity of PTSD symptoms · adults with post‐traumatic stress or common mental disorders

It is very uncertain whether primary health professional‐led psychological interventions changes PTS symptoms (1 to 6 months post intervention) Harvard Trauma… 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

Depression symptoms (1 to 6 months post intervention) Hopkins Symptom Checklist ‐ depression (higher score = higher severity) · adults with post‐traumatic stress or common mental disorders

It is very uncertain whether primary health professional‐led psychological interventions changes depression symptoms (1 to 6 months post intervention) Hopkins… 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

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