Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

163 questions · 169 findings · 21 reviews · Breast Cancer

No studies found 5 · 3%GRADE not reported 5 · 3%Very low 29 · 17.2%Low 47 · 27.8%Moderate 49 · 29%High 34 · 20.1%

Boost vs no boost

Subgroup analysis: local control ‐ > 40 years old, recurrence at 5 years · breast‐conserving radiotherapy for breast cancer

Boost leads to lower subgroup analysis: local control ‐ > 40 years old, recurrence at 5… compared with no boost (high certainty).

1 finding from 1 review