Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

356 questions · 373 findings · 42 reviews

No studies found 47 · 12.6%GRADE not reported 21 · 5.6%Very low 68 · 18.2%Low 92 · 24.7%Moderate 97 · 26%High 48 · 12.9%

Combination chemotherapy vs single‐agent chemotherapy

Radiotherapy compliance · people with resectable stage II and III rectal cancer undergoing preoperative chemoradiation followed by surgery

Combination chemotherapy probably leads to lower radiotherapy compliance compared with single‐agent chemotherapy (moderate certainty).

1 finding from 1 review

Combination chemotherapy vs single‐agent chemotherapy

Chemotherapy compliance · people with resectable stage II and III rectal cancer undergoing preoperative chemoradiation followed by surgery

Combination chemotherapy leads to lower chemotherapy compliance compared with single‐agent chemotherapy (high certainty).

1 finding from 1 review

Combination therapy vs alpha‐blocker

Surgical intervention · men with lower urinary tract symptoms secondary to benign prostatic obstruction

It is very uncertain whether combination therapy changes surgical intervention compared with alpha‐blockers (very low certainty).

1 finding from 1 review