Findings

What do systematic reviews say?

442 questions · 468 findings · 55 reviews

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No studies found 96 · 20.5%GRADE not reported 54 · 11.5%Very low 172 · 36.8%Low 87 · 18.6%Moderate 40 · 8.5%High 19 · 4.1%

Reduction of exposure vs continued exposure

FEV1 % predicted: absolute change from baseline · workers with occupational asthma

1 finding from 1 review

Workplace interventions for treatment of occupational asthma 2019 · Cochrane Headline outcomes only
no estimate extracted
4 studies · 224 participants
Very low

Reduction of exposure vs continued exposure

Change in NSBH: · workers with occupational asthma

The review found no eligible studies for this question.

1 finding from 1 review

Workplace interventions for treatment of occupational asthma 2019 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Removal from exposure vs reduction of exposure

Absence of asthma symptoms; · workers with occupational asthma

It is very uncertain whether removal from exposure changes absence of asthma symptoms; compared with reduction of exposure (very low certainty).

1 finding from 1 review

Workplace interventions for treatment of occupational asthma 2019 · Cochrane Headline outcomes only
RR 6.05 [0.86, 42.34]
6 studies · 359 participants
Very low

Training plus exposure information vs training (noise exposure)

Change in noise levels at 4 months' · workers exposed to noise

1 finding from 1 review

Interventions to prevent occupational noise‐induced hearing loss 2017 · Cochrane Headline outcomes only
no estimate extracted
1 study · 176 participants
Low

Hearing loss prevention programme (HLPP) with exposure information vs HLPP without exposure information (hearing loss)

Annual increase in hearing threshold (dB/year at 2,3 and 4 kHz) · workers exposed to noise

1 finding from 1 review

Interventions to prevent occupational noise‐induced hearing loss 2017 · Cochrane Headline outcomes only
no estimate extracted
312 participants
Very low

Full‐face filtering masks vs no respiratory protection

Reduction in exposure to asbestos · asbestos workers

The review found no eligible studies for this question.

1 finding from 1 review

Personal protective equipment for preventing asbestos exposure in workers 2024 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Powered air‐purifying respirators vs no respiratory protection

Asbestos exposure after doffing · asbestos workers

The review found no eligible studies for this question.

1 finding from 1 review

Personal protective equipment for preventing asbestos exposure in workers 2024 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Full‐face filtering masks vs no respiratory protection

Asbestos exposure after doffing · asbestos workers

The review found no eligible studies for this question.

1 finding from 1 review

Personal protective equipment for preventing asbestos exposure in workers 2024 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Supplied air respirators vs no respiratory protection

Reduction in exposure to asbestos · asbestos workers

1 finding from 1 review

Personal protective equipment for preventing asbestos exposure in workers 2024 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
Moderate

Supplied air respirators vs no respiratory protection

Asbestos exposure after doffing · asbestos workers

The review found no eligible studies for this question.

1 finding from 1 review

Personal protective equipment for preventing asbestos exposure in workers 2024 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Double primary (canine and first molar) tooth extraction vs Single primary (canine) tooth extraction

Number of participants referred for surgical exposure of the PDC · Young people aged 9 to 14 years diagnosed with one or both palatally displaced permanent maxillary canines (PDC)

It is very uncertain whether double primary (canine and first molar) tooth extraction changes number of participants referred for surgical exposure of the PDC compared with single primary (canine) tooth extraction (very low certainty).

1 finding from 1 review

Interventions for promoting the eruption of palatally displaced permanent canine teeth, without the need for surgical… 2021 · Cochrane All outcomes
48 months (maximum; mITT)
RR 0.31 [0.06, 1.45]
2 studies · 96 participants
Very low

Individual level interventions vs control

Measures of air pollution exposure ( · healthy individuals and those with a pre‐existing health condition

1 finding from 1 review

Individual‐level interventions to reduce personal exposure to outdoor air pollution and their effects on people with… 2021 · Cochrane Headline outcomes only
no estimate extracted
173 participants
Very low

Extraction of the primary (baby) canine (single primary tooth extraction) vs No extraction (non-intervention control)

Number of participants referred for surgical exposure of the PDC · Young people aged 9 to 14 years diagnosed with one or both palatally displaced permanent maxillary canines (PDC)

It is very uncertain whether extraction of the primary (baby) canine (single primary tooth… changes number of participants referred for surgical exposure of the PDC compared with no extraction (non-intervention control) (very low certainty).

1 finding from 1 review

Interventions for promoting the eruption of palatally displaced permanent canine teeth, without the need for surgical… 2021 · Cochrane All outcomes
12 months
RR 0.61 [0.29, 1.28]
1 study · 45 participants
Very low

Closed‐system transfer device plus safe handling vs safe handling alone

Other measures of exposure · healthcare staff who handle infusional hazardous drugs

The review found no eligible studies for this question.

1 finding from 1 review

Closed‐system drug‐transfer devices plus safe handling of hazardous drugs versus safe handling alone for reducing… 2018 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Trauma‐focused CBT/Exposure therapy vs Waitlist/Usual Care

Severity of PTSD symptoms ‐ Clinician‐rated · Adults with PTSD for at least 3 months

1 finding from 1 review

Psychological therapies for chronic post‐traumatic stress disorder (PTSD) in adults 2013 · Cochrane Headline outcomes only
no estimate extracted
28 studies · 1256 participants
Very low

Trauma‐focused CBT/Exposure therapy vs Waitlist/Usual Care

Leaving the study early · Adults with PTSD for at least 3 months

It is very uncertain whether trauma‐focused CBT/Exposure therapy changes leaving the study early for any reason compared with waitlist/Usual Care (very low certainty).

1 finding from 1 review

Psychological therapies for chronic post‐traumatic stress disorder (PTSD) in adults 2013 · Cochrane Headline outcomes only
RR 1.64 [1.3, 2.06]
33 studies · 1756 participants
Very low

Trauma‐focused CBT/Exposure therapy vs non‐TFCBT

Severity of PTSD symptoms ‐ Clinician‐rated · Adults with PTSD for at least 3 months

1 finding from 1 review

Psychological therapies for chronic post‐traumatic stress disorder (PTSD) in adults 2013 · Cochrane Headline outcomes only
no estimate extracted
7 studies · 267 participants
Very low

Trauma‐focused CBT/Exposure therapy vs non‐TFCBT

Leaving the study early · Adults with PTSD for at least 3 months

It is very uncertain whether trauma‐focused CBT/Exposure therapy changes leaving the study early for any reason compared with non‐TFCBT (very low certainty).

1 finding from 1 review

Psychological therapies for chronic post‐traumatic stress disorder (PTSD) in adults 2013 · Cochrane Headline outcomes only
RR 1.19 [0.71, 2]
7 studies · 312 participants
Very low

Trauma‐focused CBT/Exposure therapy vs all other therapies

Severity of PTSD symptoms ‐ Clinician‐rated · Adults with PTSD for at least 3 months

1 finding from 1 review

Psychological therapies for chronic post‐traumatic stress disorder (PTSD) in adults 2013 · Cochrane Headline outcomes only
no estimate extracted
10 studies · 612 participants
Very low

Trauma‐focused CBT/Exposure therapy vs all other therapies

Leaving the study early · Adults with PTSD for at least 3 months

It is very uncertain whether trauma‐focused CBT/Exposure therapy changes leaving the study early for any reason compared with other therapies (very low certainty).

1 finding from 1 review

Psychological therapies for chronic post‐traumatic stress disorder (PTSD) in adults 2013 · Cochrane Headline outcomes only
RR 1.39 [1.01, 1.92]
11 studies · 762 participants
Very low