Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,337 questions · 1,354 findings · 566 reviews

No studies found 307 · 22.7%GRADE not reported 81 · 6%Very low 424 · 31.3%Low 310 · 22.9%Moderate 189 · 14%High 43 · 3.2%

Intervention not reported

There was no evidence of differences in the proportion of participants experiencing serious adverse events (for any of the comparisons Quality of evidence = very low1,2,3. · people undergoing liver resection
1 finding from 1 review

Intervention not reported

Adverse events, complications and morbidity associated with (adeno)tonsillectomy and comparators Expressed as the proportion of children experiencing a serious adverse event [7 months] · children with obstructive sleep‐disordered breathing
1 finding from 1 review

Quinolone vs macrolides

Quality of life Drug resistance/microbial sensitivity Serious adverse events Lung function Hospitalisations Adverse events/side effects Number of participants colonised with P aeruginosa · patients with chronic obstructive pulmonary disease

The review found no eligible studies for this question.

1 finding from 1 review

Macrolides vs tetracycline

Quality of life Drug resistance/microbial sensitivity Serious adverse events Lung function Hospitalisations Adverse events/side effects Number of participants colonised with P aeruginosa · patients with chronic obstructive pulmonary disease

The review found no eligible studies for this question.

1 finding from 1 review

Quinolone vs tetracycline

Quality of life Drug resistance/microbial sensitivity Serious adverse events Lung function Hospitalisations Adverse events/side effects Number of participants colonised with P aeruginosa · patients with chronic obstructive pulmonary disease

The review found no eligible studies for this question.

1 finding from 1 review

Intervention not reported

Withdrawal of methylphenidate due to non‐serious adverse events Measured by: proportion of participants withdrawn from treatment Average study duration (range): 5.60 months (0.6 months to 41 months) · children and adolescents aged 18 years and under diagnosed with ADHD
1 finding from 1 review

Omega‐3 vs placebo

Serious adverse events "Defined as events that result in death, hospitalization, prolongation of hospitalization, or are life threatening (based on the judgment of the study physician)" (Quinn 2010) · Apathy in people with mild‐to‐moderate Alzheimer's disease

Omega‐3 PUFA supplements showed no clear difference in serious adverse events "Defined as events that result in death,… compared with placebo (high certainty).

1 finding from 1 review

Intervention not reported

Withdrawal of methylphenidate due to serious adverse events (non‐comparative cohort studies) Measured by: proportion of participants withdrawn from treatment Average study duration (range): 7.9 months (1 month to 37 months) · children and adolescents aged 18 years and under diagnosed with ADHD
1 finding from 1 review

Perineural vs intravenous dexamethasone

Incidence of serious adverse events (we used the NIH definition of adverse events. A serious event includes death, a life‐threatening event that requires hospitalization or prolonged hospitalization, disability or congenital anomaly) · peripheral nerve block

The review found no eligible studies for this question.

1 finding from 1 review

Perineural dexamethasone vs placebo

Incidence of serious adverse events (we used the NIH definition of adverse events. A serious event includes death, a life‐threatening event that requires hospitalization or prolonged hospitalization, disability or congenital anomaly) · participants undergoing surgery with peripheral nerve block
1 finding from 1 review

Intravenous dexamethasone vs placebo

Incidence of serious adverse events (we used the NIH definition of adverse events. A serious event includes death, a life‐threatening event that requires hospitalization or prolonged hospitalization, disability or congenital anomaly) · participants undergoing surgery with peripheral nerve block

The review found no eligible studies for this question.

1 finding from 1 review

Ibuprofen vs paracetamol

Serious adverse events, defined as any medical event at any dose that results in death, is life‐threatening, requires hospitalisation (or prolongation of existing hospitalisation) or results in permanent damage or disability (FDA 2016) · children with acute postoperative pain

The review found no eligible studies for this question.

1 finding from 1 review

Ibuprofen vs morphine

Serious adverse events, defined as any medical event at any dose that results in death, is life‐threatening, requires hospitalisation (or prolongation of existing hospitalisation) or results in permanent damage or disability (FDA 2016) · children with acute postoperative pain

The review found no eligible studies for this question.

1 finding from 1 review

Ibuprofen vs ketorolac

Serious adverse events, defined as any medical event at any dose that results in death, is life‐threatening, requires hospitalisation (or prolongation of existing hospitalisation) or results in permanent damage or disability (FDA 2016) · children with acute postoperative pain

The review found no eligible studies for this question.

1 finding from 1 review

Ibuprofen vs placebo

Serious adverse events, defined as any medical event at any dose that results in death, is life‐threatening, requires hospitalisation (or prolongation of existing hospitalisation) or results in permanent damage or disability (FDA 2016) · children with acute postoperative pain

The review found no eligible studies for this question.

1 finding from 1 review

Certolizumab pegol vs placebo

Any severe adverse event during maintenance treatment · people with Crohn's disease who responded to CZP remission‐induction treatment

Certolizumab pegol showed no clear difference in serious adverse events during remission maintenance treatment(1 RCT,… compared with placebo (low certainty).

1 finding from 1 review