Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

424 questions · 424 findings · 136 reviews

No studies found 93 · 21.9%GRADE not reported 14 · 3.3%Very low 130 · 30.7%Low 114 · 26.9%Moderate 58 · 13.7%High 15 · 3.5%

Metformin vs placebo or no treatment

Gastrointestinal adverse events · Women with polycystic ovary syndrome, oligo amenorrhoea and subfertility

Metformin probably leads to higher adverse events (gastrointestinal) per woman compared with placebo or no treatment (moderate certainty).

1 finding from 1 review

Metformin combined with clomiphene citrate vs clomiphene

Gastrointestinal adverse events · women with polycystic ovary syndrome

Metformin combined with clomiphene citrate probably leads to higher adverse events (gastrointestinal) per woman compared with clomiphene citrate alone (moderate certainty).

1 finding from 1 review · compare the 2 reviews

Cromolyn sodium vs placebo

Withdrawals due to adverse events · active EoE pediatric patients

Cromolyn sodium showed no clear difference in withdrawals due to adverse events at 8 weeks compared with placebo (low certainty).

1 finding from 1 review

Swallowed fluticasone vs prednisone

Withdrawals due to adverse events · active EoE pediatric patients

It is very uncertain whether swallowed fluticasone changes withdrawals due to adverse events at 4 weeks compared with oral prednisone (very low certainty).

1 finding from 1 review

Esomeprazole vs fluticasone

Withdrawals due to adverse events · active EoE patients

It is very uncertain whether esomeprazole changes withdrawals due to adverse events at 8 weeks compared with fluticasone (very low certainty).

1 finding from 1 review

Viaskin milk patch vs placebo

Withdrawals due to adverse events · active EoE pediatric patients

Viaskin milk patch showed no clear difference in withdrawals due to adverse events at 44 weeks compared with placebo (low certainty).

1 finding from 1 review

Summary of findings: cycled vs culture‐based antibiotic therapy

Adverse events: severe adverse events (total) · children (aged 1 to 12 years) with CF and a newly isolated PA infection

Summary of findings: cycled showed no clear difference in adverse events: severe adverse events (total) compared with culture‐based antibiotic therapy (moderate certainty).

1 finding from 1 review

Immune checkpoint inhibitors vs any second‐line chemotherapy

Discontinuation of medication due to adverse events · participants with advanced or metastatic muscle invasive bladder cancer

Immune checkpoint inhibitors may leads to lower discontinuation due to adverse events Range of compared with any second‐line chemotherapy (low certainty).

1 finding from 1 review

Immune checkpoint inhibitors vs any first‐line chemotherapy

Discontinuation of medication due to adverse events · participants with advanced or metastatic muscle invasive bladder cancer

Immune checkpoint inhibitors showed no clear difference in discontinuation due to adverse events Range of compared with any first‐line chemotherapy (low certainty).

1 finding from 1 review

Corticosteroids vs placebo

Withdrawals due to adverse events · inactive EoE patients

Corticosteroids may leads to lower withdrawals due to adverse events 12 to 50 weeks compared with placebo (low certainty).

1 finding from 1 review

Biologics vs placebo

Withdrawals due to adverse events · active EoE patients

Biologics showed no clear difference in withdrawals due to adverse events 12 to 44 weeks compared with placebo (low certainty).

1 finding from 1 review

Corticosteroids vs placebo

Withdrawals due to adverse events · active EoE patients

Corticosteroids may leads to lower withdrawals due to adverse events (2 to 12 weeks) compared with placebo (low certainty).

1 finding from 1 review