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What do systematic reviews say?

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Evidence found and GRADE certainty

2 questions · 2 findings · 1 reviews · Gut

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No studies found 0 · 0%GRADE not reported 0 · 0%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 2 · 100%

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

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

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

Biological therapy 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