Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,918 questions · 5,537 findings · 1,803 reviews

No studies found 1,309 · 23.6%GRADE not reported 440 · 7.9%Very low 1,560 · 28.2%Low 1,292 · 23.3%Moderate 751 · 13.6%High 185 · 3.3%

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Chemmotherapy combined with biological therapy vs chemotherapy alone

Any adverse events · advanced gastric and oesophago‐gastric junction adenocarcinoma

Chemmotherapy combined with biological therapy showed no clear difference in any adverse events compared with chemotherapy (moderate certainty).

1 finding from 1 review

Chemotherapy vs placebo, best supportive care (BSC) or no treatment

Any adverse events · advanced gastric and oesophago‐gastric junction adenocarcinoma

Chemotherapy showed no clear difference in any adverse events compared with placebo, best supportive care (BSC) or no treatment (high certainty).

1 finding from 1 review

Azithromycin vs doxycycline

Adverse events Men · men and non‐pregnant women with symptomatic (uterine cervicitis and urethritis), or asymptomatic genital CT infection, diagnosed by cell…

Azithromycin showed no clear difference in adverse events Men compared with doxycycline (low certainty).

1 finding from 1 review

Adverse events with anti‐gram‐positive antibiotics vs placebo

Any adverse events · people with cancer who have febrile neutropenia

It is very uncertain whether adverse events with anti‐gram‐positive antibiotics changes any adverse events compared with placebo (very low certainty).

1 finding from 1 review