Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

891 questions · 902 findings · 317 reviews

No studies found 210 · 23.3%GRADE not reported 56 · 6.2%Very low 236 · 26.2%Low 220 · 24.4%Moderate 146 · 16.2%High 34 · 3.8%

Aromatherapy vs placebo

Adverse events (common reactions to aromatherapy include skin rashes, dyspnoea, headache, cardiac arrhythmias, hypotension, hypertension or dizziness) · adults and children having any type of surgical procedure under general anaesthesia, regional anaesthesia or sedation, as hospital…

The review found no eligible studies for this question.

1 finding from 1 review

Antibiotics vs placebo compared

Adverse effects of antibiotics · children, aged 2 to 59 months, with WHO‐defined non‐severe pneumonia and wheeze

Antibiotic therapy showed no clear difference in treatment harms (adverse events or side effects associated with… compared with placebo compared to placebo (low certainty).

1 finding from 1 review

Marine‐derived n‐3 fatty acids therapy vs No marine‐derived n‐3 fatty acids therapy

Adverse events · stroke and/or TIA

Marine‐derived n‐3 fatty acids therapy showed no clear difference in adverse events compared with no marine‐derived n‐3 fatty acids therapy (low certainty).

2 findings from 1 review

Music therapy vs placebo or usual care

Adverse events Any serious or non‐serious adverse event · Individuals with autism spectrum disorder

Music therapy showed no clear difference in adverse events Any serious or non‐serious adverse event compared with placebo therapy or standard care (moderate certainty).

1 finding from 1 review

Schema therapy vs usual care

Adverse events Assessed by: number of participants with a global negative outcome (e.g. dropping out of therapy, recidivism or being transferred to another facility due to poor treatment response) overall Timing of assessment: over the 3 years · adults with antisocial personality disorder

The review found no eligible studies for this question.

1 finding from 1 review