Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,041 questions · 1,056 findings · 283 reviews

No studies found 346 · 32.8%GRADE not reported 111 · 10.5%Very low 326 · 30.9%Low 195 · 18.5%Moderate 66 · 6.3%High 12 · 1.1%

Psychological therapy vs usual care or attention control

Adverse events: all ‐ central nervous system events (e.g. suicidal intentions) (secondary outcome) · people with depression after stroke

It is very uncertain whether psychological therapy changes adverse events: all ‐ central nervous system events (e.g. suicidal… compared with usual care and/or attention control (very low certainty).

1 finding from 1 review

Psychosocial risk management ('Resettle' programme) vs usual care

Death during study period · adults with antisocial personality disorder

It is very uncertain whether psychosocial risk management ('Resettle' programme) changes adverse events: death during the study period Timing of assessment:… compared with treatment‐as‐usual (very low certainty).

1 finding from 1 review

Palliative care vs usual care

Adverse effects: at least one serious adverse event · adults with multiple sclerosis Interventions: immunosuppressive and immunomodulatory drugs Comparator: placebo Outcome: withdrawals due to…

Palliative care showed no clear difference in serious adverse events Assessed by: number of participants… compared with usual care (low certainty).

1 finding from 1 review

Azithromycin vs placebo or vitamins

Minor participant‐reported adverse events not requiring withdrawal of the treatment: Mild abdominal pain. · pityriasis rosea

Azithromycin showed no clear difference in minor participant‐reported adverse events not requiring withdrawal… compared with placebo or vitamins (moderate certainty).

1 finding from 1 review

Fractional laser vs non‐fractional non‐ablative laser

Adverse events ‐ hyperpigmentation ( · people with acne scars

It is very uncertain whether fractional laser changes investigator‐assessed adverse events (short‐term) Hyperpigmentation… compared with non‐fractional non‐ablative laser (very low certainty).

1 finding from 1 review

Non‐invasive brain stimulation vs usual care with or without sham interventions

Adverse effects (central nervous system) · people with depression after stroke

Non‐invasive brain stimulation showed no clear difference in adverse events: all ‐ central nervous system events (e.g. confusion,… compared with sham non‐invasive brain stimulation and/or usual care (low certainty).

1 finding from 1 review

Electrical or magnetic stimulation vs no treatment, sham treatment or verbal/written instruction

Number of participants experiencing muscle‐related adverse events: e.g. soreness, discomfort, cramps, pain · men with urinary incontinence following prostate surgery

The review found no eligible studies for this question.

1 finding from 1 review

Combinations of conservative treatments vs no treatment, sham treatment or verbal/written instruction

Number of participants experiencing muscle‐related adverse events: e.g. soreness, discomfort, cramps, pain · men with urinary incontinence following prostate surgery

It is very uncertain whether combinations of conservative treatments changes number of participants experiencing muscle‐related adverse events:… compared with no treatment, sham treatment or verbal/written instruction (very low certainty).

1 finding from 1 review

Erythromycin vs placebo

Adverse events: minor gastrointestinal symptoms · pityriasis rosea

Erythromycin showed no clear difference in minor participant‐reported adverse events not requiring withdrawal… compared with placebo (moderate certainty).

1 finding from 1 review

Intervention vs no intervention or control intervention (control)

Serious adverse events (number) ‐ pegylated interferon‐alpha plus ribavirin versus pegylated interferon‐alpha · people with acute hepatitis C infection

It is very uncertain whether intervention changes serious adverse events (proportion) ‐ pegylated interferon‐alpha… compared with no intervention or control intervention (control) (very low certainty).

2 findings from 1 review

Non‐invasive brain stimulation and pharmacological intervention (combination) vs a pharmacological intervention and sham stimulation or usual care (single)

Adverse events: all ‐ other events ‐ not listed above (e.g. dysuria, neck pain, eye discomfort) (secondary outcome) · people with depression after stroke

It is very uncertain whether pharmacological intervention and non‐invasive brain stimulation… changes adverse events: all ‐ other events ‐ not listed above (e.g.… compared with a pharmacological intervention and sham stimulation or usual care… (very low certainty).

1 finding from 1 review

Calcineurin inhibitor vs IV cyclophosphamide

Adverse events: treatment failure (non response, serious infection, persistently elevated creatinine) at 6 months · idiopathic steroid‐resistant nephrotic syndrome in children

Calcineurin inhibitor probably leads to lower adverse events: treatment failure at 6 months (non response, serious… compared with IV cyclophosphamide (moderate certainty).

1 finding from 1 review