Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,109 questions · 1,155 findings · 70 reviews

No studies found 216 · 18.7%GRADE not reported 450 · 39%Very low 123 · 10.6%Low 195 · 16.9%Moderate 127 · 11%High 44 · 3.8%

Summary of findings table ‐ Postmastectomy radiotherapy (PMRT) vs no PMRT

Locoregional recurrence · women with breast cancer and one to three positive lymph nodes

Summary of findings table ‐ Postmastectomy radiotherapy (PMRT) may leads to lower local and regional recurrence (LRR) compared with no PMRT (low certainty).

1 finding from 1 review

Summary of findings table ‐ Postmastectomy radiotherapy (PMRT) vs no PMRT

Overall survival (OS) · women with breast cancer and one to three positive lymph nodes

Summary of findings table ‐ Postmastectomy radiotherapy (PMRT) probably leads to lower overall survival (OS) compared with no PMRT (moderate certainty).

1 finding from 1 review

External beam radiotherapy (EBRT) plus transarterial chemoembolisation (TACE) vs TACE alone

Mortality Number of deaths at maximum · participants with unresectable hepatocellular carcinoma

External beam radiotherapy (EBRT) plus transarterial… may leads to lower all‐cause mortality (at maximum 1‐year compared with TACE alone (low certainty).

1 finding from 1 review

External beam radiotherapy (EBRT) plus transarterial chemoembolisation (TACE) vs TACE alone

Complete response plus partial response Length of · participants with unresectable hepatocellular carcinoma

External beam radiotherapy (EBRT) plus transarterial… may leads to higher complete response plus partial response Length of compared with TACE alone (low certainty).

1 finding from 1 review

External beam radiotherapy (EBRT) plus transarterial chemoembolisation (TACE) vs TACE alone

Elevated alanine aminotransferase Length of · participants with unresectable hepatocellular carcinoma

It is very uncertain whether external beam radiotherapy (EBRT) plus transarterial… changes elevated alanine aminotransferase Length of compared with TACE alone (very low certainty).

1 finding from 1 review

External beam radiotherapy (EBRT) plus transarterial chemoembolisation (TACE) vs TACE alone

Elevated total bilirubin Length of · participants with unresectable hepatocellular carcinoma

It is very uncertain whether external beam radiotherapy (EBRT) plus transarterial… changes elevated total bilirubin Length of compared with TACE alone (very low 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