Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

227 questions · 258 findings · 32 reviews

No studies found 68 · 26.4%GRADE not reported 32 · 12.4%Very low 47 · 18.2%Low 70 · 27.1%Moderate 34 · 13.2%High 7 · 2.7%

Cytarabine plus high‐dose methotrexate vs high‐dose methotrexate alone

Mortality Median · patients with primary CNS lymphoma

Cytarabine plus high‐dose methotrexate showed no clear difference in mortality (median 3 years) compared with high‐dose methotrexate alone (moderate certainty).

1 finding from 1 review

Cytarabine plus high‐dose methotrexate vs high‐dose methotrexate alone

Progression/relapse · patients with primary CNS lymphoma

Cytarabine plus high‐dose methotrexate probably leads to lower progression/relapse (median 3 years) compared with high‐dose methotrexate alone (moderate certainty).

1 finding from 1 review

Cytarabine plus high‐dose methotrexate vs high‐dose methotrexate alone

Treatment‐related mortality · patients with primary CNS lymphoma

Cytarabine plus high‐dose methotrexate showed no clear difference in treatment‐related mortality compared with high‐dose methotrexate alone (moderate certainty).

1 finding from 1 review

Cytarabine plus high‐dose methotrexate vs high‐dose methotrexate alone

Severe adverse effects (grade 3+): Infection · patients with primary CNS lymphoma

Cytarabine plus high‐dose methotrexate probably leads to higher infections (grade 3 to 4) compared with high‐dose methotrexate alone (moderate certainty).

1 finding from 1 review

Anticoagulant drugs: VKA high dose vs vitamin K antagonist (VKA)

Total mortalitya · people with antiphospholipid syndrome and a history of stroke or thromboembolic events

High‐dose VKA showed no clear difference in all‐cause mortalitya compared with standard‐dose VKA (low certainty).

1 finding from 1 review

Anticoagulant drugs: VKA high dose vs vitamin K antagonist (VKA)

Any bleedingb · people with antiphospholipid syndrome and a history of stroke or thromboembolic events

High‐dose VKA showed no clear difference in any bleedingb compared with standard‐dose VKA (low certainty).

1 finding from 1 review

Anticoagulant drugs: VKA high dose vs vitamin K antagonist (VKA)

Thromboembolic events · people with antiphospholipid syndrome and a history of stroke or thromboembolic events

High‐dose VKA showed no clear difference in any thromboembolic event compared with standard‐dose VKA (low certainty).

1 finding from 1 review

Anticoagulant drugs: VKA high dose vs vitamin K antagonist (VKA)

Major bleeding · people with antiphospholipid syndrome and a history of stroke or thromboembolic events

High‐dose VKA showed no clear difference in major bleeding compared with standard‐dose VKA (low certainty).

1 finding from 1 review

High‐dose chemotherapy vs chemotherapy without bone marrow transplant or stem cell rescue

Overall survival at 5‐year · women with early poor prognosis breast cancer

High‐dose chemotherapy showed no clear difference in overall survival at 5‐year compared with chemotherapy without bone marrow transplant or stem cell rescue (high certainty).

1 finding from 1 review

High‐dose chemotherapy vs chemotherapy without bone marrow transplant or stem cell rescue

Event‐free survival · women with early poor prognosis breast cancer

High‐dose chemotherapy showed no clear difference in event‐free survival at 5‐year compared with chemotherapy without bone marrow transplant or stem cell rescue (high certainty).

1 finding from 1 review

High‐dose chemotherapy vs chemotherapy without bone marrow transplant or stem cell rescue

Treatment‐related mortality · women with early poor prognosis breast cancer

High‐dose chemotherapy leads to higher treatment‐related mortality compared with chemotherapy without bone marrow transplant or stem cell rescue (high certainty).

1 finding from 1 review

High‐dose chemotherapy vs chemotherapy without bone marrow transplant or stem cell rescue

Second cancers at 4 ‐ 9‐year median · women with early poor prognosis breast cancer

High‐dose chemotherapy showed no clear difference in second cancers at 4 ‐ 9‐year median compared with chemotherapy without bone marrow transplant or stem cell rescue (high certainty).

1 finding from 1 review