Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

72 questions · 72 findings · 36 reviews

No studies found 14 · 19.4%GRADE not reported 2 · 2.8%Very low 14 · 19.4%Low 22 · 30.6%Moderate 16 · 22.2%High 4 · 5.6%

LAMA add‐on vs long‐acting beta2‐agonists (LABA) add‐on

Serious adverse events 22 weeks · adults with asthma not well controlled on ICS

Long‐acting muscarinic antagonists (LAMA) add‐on showed no clear difference in serious adverse events 22 weeks compared with long‐acting beta2‐agonists (LABA) add‐on (low certainty).

1 finding from 1 review

Naloxone + oxycodone prolonged release tablets vs oxycodone

Serious adverse eventsg · people with cancer irrespective of whether they were receiving palliative care opioid‐induced bowel dysfunction

It is very uncertain whether naloxone + oxycodone prolonged release tablets changes serious adverse eventsg compared with oxycodone prolonged‐released tablets (very low certainty).

1 finding from 1 review

Long‐term red cell transfusion vs hydroxyurea and phlebotomy

Serious adverse events as a result of sickle cell‐related complications · individuals with sickle cell disease who are at risk of a primary stroke who have had long‐term red cell transfusions to prevent a stroke

It is very uncertain whether long‐term red cell transfusion changes serious adverse events as a result of sickle cell‐related… compared with hydroxyurea and phlebotomy (very low certainty).

1 finding from 1 review

Long‐term red cell transfusion vs hydroxyurea and phlebotomy

Serious adverse events as a result of sickle cell‐related complications · individuals with sickle cell disease who have had a stroke who have had long‐term red cell transfusions to prevent another stroke

It is very uncertain whether long‐term red cell transfusion changes serious adverse events as a result of sickle cell‐related… compared with hydroxyurea and phlebotomy (very low certainty).

1 finding from 1 review

Long‐term red cell transfusion vs no transfusion

Serious adverse events as a result of sickle cell‐related complications · individuals with sickle cell disease who are at risk of a primary stroke who have not had previous long‐term red cell transfusions

Long‐term red cell transfusion may leads to lower serious adverse events as a result of sickle cell‐related… compared with no transfusion (low certainty).

1 finding from 1 review

Supervised dosing with a long‐acting medication vs unsupervised consumption

Adverse serious events (any) (number of participants) · patients with opioid dependence

It is very uncertain whether supervised dosing with a long‐acting medication changes adverse serious events (any) (number of participants) compared with unsupervised consumption (very low certainty).

1 finding from 1 review

LABA/LAMA vs LABA plus inhaled corticosteroid (ICS)

Number of participants experiencing any serious adverse events · stable COPD

Long‐acting muscarinic antagonist (LAMA) plus long‐acting… showed no clear difference in serious adverse events (number of people experiencing ≥ 1 SAEs) compared with LABA plus inhaled corticosteroid (ICS) (high certainty).

1 finding from 1 review

Two doses of HPV vaccine with longer interval vs two doses of HPV vaccine with shorter interval

Serious adverse events at up to 5‐year · 9‐ to 14‐year‐old females and males

It is very uncertain whether two doses of HPV vaccine with longer interval changes serious adverse events at up to 5‐year compared with two doses of HPV vaccine with shorter interval (very low certainty).

1 finding from 1 review

Intervention not reported

Serious adverse events at longest · hospitalised adults with COVID‐19 (moderate to severe disease)

The intervention showed no clear difference in serious adverse events at longest (low certainty).

1 finding from 1 review

Summary of findings table ‐ Daratumumab plus standard therapy vs usual care

Serious adverse events at longest · people with newly diagnosed multiple myeloma ineligible for transplant

Summary of findings table ‐ Daratumumab plus standard therapy probably leads to higher serious adverse events (longest available compared with standard therapy (moderate certainty).

1 finding from 1 review

PERPHENAZINE vs antipsychotics

Other adverse events: any serious adverse event ‐ short and long term · patients with schizophrenia

It is very uncertain whether PERPHENAZINE changes other adverse events: any serious adverse event ‐ short and long term compared with ANY ANTIPSYCHOTICS (very low certainty).

1 finding from 1 review

Oral propranolol vs placebo

Adverse events experienced at short or long term ‐ Serious adverse events 24 weeks' · infantile haemangiomas (strawberry birthmarks) of the skin

Oral propranolol showed no clear difference in adverse events experienced at short or long term ‐ Serious adverse… compared with placebo (low certainty).

1 finding from 1 review