Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

748 questions · 782 findings · 58 reviews · Gynaecological, Neuro-oncology and Orphan Cancer

No studies found 164 · 21%GRADE not reported 26 · 3.3%Very low 151 · 19.3%Low 222 · 28.4%Moderate 158 · 20.2%High 61 · 7.8%

Surgery plus whole brain radiotherapy (WBRT) vs stereotactic radiosurgery plus WBRT

Overall survival · people with single or solitary brain metastasis

Surgery plus whole brain radiotherapy (WBRT) showed no clear difference in overall survival compared with stereotactic radiosurgery plus WBRT (low certainty).

1 finding from 1 review

Surgery plus whole brain radiotherapy (WBRT) vs stereotactic radiosurgery plus WBRT

Adverse events (moderate) · people with single or solitary brain metastasis

It is very uncertain whether surgery plus whole brain radiotherapy (WBRT) changes adverse events (moderate) compared with stereotactic radiosurgery plus WBRT (very low certainty).

1 finding from 1 review

Surgery plus whole brain radiotherapy (WBRT) vs stereotactic radiosurgery plus WBRT

Progression‐free survival · people with single or solitary brain metastasis

Surgery plus whole brain radiotherapy (WBRT) showed no clear difference in progression‐free survival compared with stereotactic radiosurgery plus WBRT (low certainty).

1 finding from 1 review

Whole brain radiation therapy (WBRT) + stereotactic radiosurgery (SRS) vs WBRT

Overall survival · Patients with brain metastases

Whole brain radiation therapy (WBRT) + stereotactic radiosurgery (SRS) showed no clear difference in overall survival compared with WBRT (moderate certainty).

1 finding from 1 review

Whole brain radiation therapy (WBRT) + stereotactic radiosurgery (SRS) vs WBRT

Disease‐specific survival · Patients with brain metastases

Whole brain radiation therapy (WBRT) + stereotactic radiosurgery (SRS) showed no clear difference in disease‐specific survival compared with WBRT (moderate certainty).

1 finding from 1 review

Whole brain radiation therapy (WBRT) + stereotactic radiosurgery (SRS) vs WBRT

Local tumor control · Patients with brain metastases

Whole brain radiation therapy (WBRT) + stereotactic radiosurgery (SRS) probably leads to lower local tumor control compared with WBRT (moderate certainty).

1 finding from 1 review

Whole brain radiation therapy (WBRT) + stereotactic radiosurgery (SRS) vs WBRT

Functionally independent survival (KPS) · Patients with brain metastases

Whole brain radiation therapy (WBRT) + stereotactic radiosurgery (SRS) showed no clear difference in functionally independent survival (KPS) compared with WBRT (moderate certainty).

1 finding from 1 review

Intervention not reported

Intervention: radiotherapy Comparison: no adjuvant treatment Outcome: neurocognitive impairment at 5‐ to 6‐year · people with glioma surviving at least two years

It is very uncertain whether the intervention changes intervention: radiotherapy Comparison: no adjuvant treatment… (very low certainty).

1 finding from 1 review

Intervention not reported

Intervention: radiotherapy Comparison: no adjuvant treatment Outcome: neurocognitive impairment at 12 year · people with glioma surviving at least two years

It is very uncertain whether the intervention changes intervention: radiotherapy Comparison: no adjuvant treatment… (very low certainty).

1 finding from 1 review

Intervention not reported

Intervention: radiotherapy Comparison: no adjuvant treatment Outcome: neurocognitive impairment at 2 year · people with glioma surviving at least two years

It is very uncertain whether the intervention changes intervention: radiotherapy Comparison: no adjuvant treatment… (very low certainty).

1 finding from 1 review

Intervention not reported

Intervention: radiotherapy Comparison: chemotherapy Outcome: neurocognitive impairment at 3 year · people with glioma surviving at least two years

The intervention showed no clear difference in intervention: radiotherapy Comparison: chemotherapy Outcome:… (low certainty).

1 finding from 1 review

Intervention not reported

Intervention: high‐dose radiotherapy Comparison: low‐dose radiotherapy Outcome: neurocognitive impairment at 2 years after treatment · people with glioma surviving at least two years

It is very uncertain whether the intervention changes intervention: high‐dose radiotherapy Comparison: low‐dose… (very low certainty).

1 finding from 1 review

Intervention not reported

Intervention: high‐dose radiotherapy Comparison: low‐dose radiotherapy Outcome: neurocognitive impairment at 5 years after treatment · people with glioma surviving at least two years

It is very uncertain whether the intervention changes intervention: high‐dose radiotherapy Comparison: low‐dose… (very low certainty).

1 finding from 1 review

Intervention not reported

Intervention: chemoradiotherapy Comparison: radiotherapy Outcome: neurocognitive impairment at 3 years after treatment · people with glioma surviving at least two years

The intervention showed no clear difference in intervention: chemoradiotherapy Comparison: radiotherapy Outcome:… (low certainty).

1 finding from 1 review

Intervention not reported

Intervention: stereotactic conformal radiotherapy Comparison: radiotherapy Outcome: neurocognitive impairment at 5 years after treatment · people with glioma surviving at least two years

The intervention showed no clear difference in intervention: stereotactic conformal radiotherapy Comparison:… (low certainty).

1 finding from 1 review

Hyperbaric oxygen vs air breathing to enhance the effectiveness of radiotherapy

Failure of local tumour control ‐ not reported · People undergoing radiation therapy for head and neck cancer

Hyperbaric oxygen probably leads to lower failure of local tumour control (local control) compared with air breathing to enhance the effectiveness of radiotherapy (moderate certainty).

1 finding from 1 review