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%

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

G‐CSF vs placebo or no treatment

Interruptions to cancer treatment (radiotherapy interruptions) · Adults with cancer receiving treatment

Granulocyte-colony stimulating factor (G-CSF) showed no clear difference in interruptions to cancer treatment (radiotherapy interruptions) compared with placebo or no treatment; GRADE not reported.

1 finding from 1 review

Keratinocyte growth factor (KGF; palifermin or repifermin), intravenous vs placebo

Interruptions to cancer treatment (unscheduled radiotherapy breaks of 5 or more days) · Adults with cancer receiving treatment

Keratinocyte growth factor (KGF; palifermin or repifermin),… showed no clear difference in interruptions to cancer treatment (unscheduled radiotherapy breaks… compared with placebo; GRADE not reported.

1 finding from 1 review

Epidermal growth factor (EGF), oral spray vs placebo

Interruptions to cancer treatment (radiotherapy breaks longer than two days) · Adults with cancer receiving treatment

Epidermal growth factor (EGF), oral spray showed no clear difference in interruptions to cancer treatment (radiotherapy breaks longer than… compared with placebo; GRADE not reported.

1 finding from 1 review

Non‐surgical vs surgical treatment of oesophageal cancer (primary outcomes)

Long‐term mortality (time‐to‐event outcome): chemoradiotherapy versus surgery All‐cause mortality for the duration of · patients with oesophageal cancer

Non‐surgical showed no clear difference in long‐term mortality (time‐to‐event outcome): chemoradiotherapy… compared with surgical treatment of oesophageal cancer (primary outcomes) (low certainty).

2 findings from 1 review

Non‐surgical vs surgical treatment of oesophageal cancer (primary outcomes)

Long‐term mortality (time‐to‐event outcome): radiotherapy versus surgery All‐cause mortality for the duration of · patients with oesophageal cancer

It is very uncertain whether non‐surgical changes long‐term mortality (time‐to‐event outcome): radiotherapy versus… compared with surgical treatment of oesophageal cancer (primary outcomes) (very low certainty).

1 finding from 1 review

Non‐surgical vs surgical treatment of oesophageal cancer (primary outcomes)

Long‐term mortality (binary outcome) All‐cause mortality for the duration of · patients with oesophageal cancer

Non‐surgical showed no clear difference in long‐term mortality (binary): definitive chemoradiotherapy versus… compared with surgical treatment of oesophageal cancer (primary outcomes) (low certainty).

1 finding from 1 review

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

Perioperative chemotherapy vs primary surgery

Overall survival by chemo‐/radiotherapy ‐ Chemotherapy only · resectable adenocarcinoma of the stomach, gastroesophageal junction, and lower esophagus

Perioperative chemotherapy leads to lower overall survival by chemo‐/radiotherapy ‐ Chemotherapy only compared with primary surgery (high certainty).

1 finding from 1 review

Perioperative chemotherapy vs primary surgery

Overall survival by chemo‐/radiotherapy ‐ Chemoradiotherapy · resectable adenocarcinoma of the stomach, gastroesophageal junction, and lower esophagus

Perioperative chemotherapy probably leads to lower overall survival by chemo‐/radiotherapy ‐ Chemoradiotherapy compared with primary surgery (moderate certainty).

1 finding from 1 review

Intervention not reported

All‐cause mortality at 31 to 100 days · Adults with haematological malignancies treated with intensive chemotherapy or radiotherapy, or both, with or without haematopoietic stem…

It is very uncertain whether the intervention changes all‐cause mortality at 31 to 100 days (very low certainty).

1 finding from 1 review

Intervention not reported

Number of participants with any bleeding ‐ not reported · Adults with haematological malignancies treated with intensive chemotherapy or radiotherapy, or both, with or without haematopoietic stem…

The review found no eligible studies for this question.

1 finding from 1 review

Intervention not reported

Length of hospital admission ‐ not reported · Adults with haematological malignancies treated with intensive chemotherapy or radiotherapy, or both, with or without haematopoietic stem…

The review found no eligible studies for this question.

1 finding from 1 review

Intervention not reported

Hospital readmission rate ‐ not reported · Adults with haematological malignancies treated with intensive chemotherapy or radiotherapy, or both, with or without haematopoietic stem…

The review found no eligible studies for this question.

1 finding from 1 review

Intervention not reported

Number of participants with any bleeding (0 to 3 months) · Adults with haematological malignancies treated with intensive chemotherapy or radiotherapy, or both, with or without haematopoietic stem…

The intervention showed no clear difference in number of participants with any bleeding (0 to 3 months) (low certainty).

1 finding from 1 review