Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,514 questions · 1,543 findings · 649 reviews

No studies found 224 · 14.5%GRADE not reported 105 · 6.8%Very low 383 · 24.8%Low 447 · 29%Moderate 293 · 19%High 91 · 5.9%

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

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 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

Lactulose vs lactitol

Non‐serious adverse events (secondary outcome) · prevention and treatment of hepatic encephalopathy in people with cirrhosis

It is very uncertain whether lactulose changes non‐serious adverse events (secondary outcome) compared with lactitol (very low certainty).

1 finding from 1 review

rHuEPO with iron vs control treatment with or without iron

Adverse events (number of participants with any adverse event) · adult participants, irrespective of gender and type of non‐cardiac surgery, with mild or severe preoperative anaemia

rHuEPO with iron showed no clear difference in adverse events (number of participants with any adverse event) compared with control treatment with or without iron (moderate certainty).

1 finding from 1 review

Intervention not reported

Proportion of patients who discontinued treatment due to adverse events ( · Patients between three and 12 years old with clinical and EEG diagnosis of BECTS

The intervention showed no clear difference in proportion of patients who discontinued treatment due to adverse… (low certainty).

1 finding from 1 review

Intervention not reported

Proportion of patients who discontinued treatment due to adverse events (28 weeks trial period) · Patients between five and 15 years old with a diagnosis of BECTS

The intervention showed no clear difference in proportion of patients who discontinued treatment due to adverse… (low certainty).

1 finding from 1 review

Intervention not reported

Proportion of patients who discontinued treatment due to adverse events (96 weeks trial period) · Patients with a clinical and EEG diagnosis of BECTS

It is very uncertain whether the intervention changes proportion of patients who discontinued treatment due to adverse… (very low certainty).

1 finding from 1 review