Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,808 questions · 8,953 findings · 827 reviews · Headline outcomes only

No studies found 1,891 · 21.1%GRADE not reported 380 · 4.2%Very low 2,100 · 23.5%Low 2,449 · 27.4%Moderate 1,684 · 18.8%High 449 · 5%

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Acupuncture vs psychological therapy

Adverse events measured during study treatment · clinical diagnosis of depression

Acupuncture showed no clear difference in adverse events measured during study treatment compared with psychological therapy (low certainty).

1 finding from 1 review

Gefitinib vs chemotherapy alone

Overall survival (OS) · People with advanced non‐small cell lung cancer

Gefitinib showed no clear difference in overall survival (OS) compared with chemotherapy (moderate certainty).

2 findings from 1 review

Gefitinib vs chemotherapy alone

Progression‐free survival · People with advanced non‐small cell lung cancer

Gefitinib showed no clear difference in progression‐free survival (PFS) compared with chemotherapy (moderate certainty).

2 findings from 1 review