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Search review questions

Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.

Limit to evidence status or GRADE (optional)

987 questions in 78 reviews · Haematology

current versions
No studies 256 · 25.9%Ungraded 64 · 6.5%Very low 207 · 21%Low 247 · 25%Moderate 163 · 16.5%High 50 · 5.1%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

QuestionEffectEvidenceStatus / GRADE
Nivolumab vs no other intervention
Response rate · adults with Hodgkin's lymphoma
Nivolumab for adults with Hodgkin's lymphoma (a rapid review using the software RobotReviewer) (2018) · Cochrane
no estimate extracted3 studies · 283 participantsVery low
Nivolumab vs no other intervention
Treatment‐related mortality · adults with Hodgkin's lymphoma
Nivolumab for adults with Hodgkin's lymphoma (a rapid review using the software RobotReviewer) (2018) · Cochrane
no estimate extractedNRNo studies
Nivolumab vs no other intervention
Grade 3 or 4 AEs · adults with Hodgkin's lymphoma
Nivolumab for adults with Hodgkin's lymphoma (a rapid review using the software RobotReviewer) (2018) · Cochrane
no estimate extracted3 studies · 283 participantsVery low
Nivolumab vs no other intervention
SAEs · adults with Hodgkin's lymphoma
Nivolumab for adults with Hodgkin's lymphoma (a rapid review using the software RobotReviewer) (2018) · Cochrane
no estimate extracted1 study · 243 participantsVery low
Prophylactic platelet transfusion prior to surgery vs no prophylactic platelet transfusion prior to surgery
All‐cause mortality within 30 days of surgery · people with a low platelet count
Prophylactic platelet transfusions prior to surgery for people with a low platelet count (2018) · Cochrane
RR 0.78 [0.41, 1.45]1 study · 72 participantsVery low
Prophylactic platelet transfusion prior to surgery vs alternative treatments
Mortality secondary to thromboembolism within 30 days of surgery – not reported · people with a low platelet count
Prophylactic platelet transfusions prior to surgery for people with a low platelet count (2018) · Cochrane
no estimate extractedNRNo studies
Prophylactic platelet transfusion prior to surgery vs alternative treatments
Mortality secondary to infection within 30 days of surgery – not reported · people with a low platelet count
Prophylactic platelet transfusions prior to surgery for people with a low platelet count (2018) · Cochrane
no estimate extractedNRNo studies
Prophylactic platelet transfusion prior to surgery vs alternative treatments
Number of participants with major bleeding within 7 days of surgery (bleeding that required ≥ 2 units of whole blood/red blood cells within 24 hours of the bleeding) · people with a low platelet count
Prophylactic platelet transfusions prior to surgery for people with a low platelet count (2018) · Cochrane
no estimate extracted1 study · 36 participantsVery low
Prophylactic platelet transfusion prior to surgery vs alternative treatments
Number of participants with minor procedure‐related bleeding within 7 days of surgery · people with a low platelet count
Prophylactic platelet transfusions prior to surgery for people with a low platelet count (2018) · Cochrane
RR 0.89 [0.06, 13.23]1 study · 36 participantsVery low
Prophylactic platelet transfusion prior to surgery vs alternative treatments
Serious adverse events (transfusion‐related adverse effects within 24 hours of the transfusion) · people with a low platelet count
Prophylactic platelet transfusions prior to surgery for people with a low platelet count (2018) · Cochrane
RR 2.7 [0.12, 62.17]1 study · 36 participantsVery low
Intervention NR
All‐cause mortality within 30 days of surgery – not reported · people with a low platelet count
Prophylactic platelet transfusions prior to surgery for people with a low platelet count (2018) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Mortality secondary to bleeding within 30 days of surgery – not reported · people with a low platelet count
Prophylactic platelet transfusions prior to surgery for people with a low platelet count (2018) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Mortality secondary to thromboembolism within 30 days of surgery – not reported · people with a low platelet count
Prophylactic platelet transfusions prior to surgery for people with a low platelet count (2018) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Mortality secondary to infection within 30 days of surgery – not reported · people with a low platelet count
Prophylactic platelet transfusions prior to surgery for people with a low platelet count (2018) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Number of participants with major bleeding within 7 days of surgery · people with a low platelet count
Prophylactic platelet transfusions prior to surgery for people with a low platelet count (2018) · Cochrane
no estimate extracted1 study · 65 participantsVery low
Prophylactic platelet transfusion prior to surgery vs no prophylactic platelet transfusion prior to surgery
Mortality secondary to bleeding within 30 days of surgery – not reported · people with a low platelet count
Prophylactic platelet transfusions prior to surgery for people with a low platelet count (2018) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Number of participants with minor procedure‐related bleeding within 7 days of surgery · people with a low platelet count
Prophylactic platelet transfusions prior to surgery for people with a low platelet count (2018) · Cochrane
no estimate extracted1 study · 65 participantsVery low
Intervention NR
Serious adverse events – not reported · people with a low platelet count
Prophylactic platelet transfusions prior to surgery for people with a low platelet count (2018) · Cochrane
no estimate extractedNRNo studies
Prophylactic platelet transfusion prior to surgery vs no prophylactic platelet transfusion prior to surgery
Mortality secondary to thromboembolism within 30 days of surgery – not reported · people with a low platelet count
Prophylactic platelet transfusions prior to surgery for people with a low platelet count (2018) · Cochrane
no estimate extractedNRNo studies
Prophylactic platelet transfusion prior to surgery vs no prophylactic platelet transfusion prior to surgery
Mortality secondary to infection within 30 days of surgery – not reported · people with a low platelet count
Prophylactic platelet transfusions prior to surgery for people with a low platelet count (2018) · Cochrane
no estimate extractedNRNo studies
Prophylactic platelet transfusion prior to surgery vs no prophylactic platelet transfusion prior to surgery
Number of participants with major bleeding within 7 days of surgery (surgical site bleeding requiring a second intervention or reoperation or surgical site bleeding that causes a haematoma or haemarthrosis of sufficient size to delay mobilisation ... · people with a low platelet count
Prophylactic platelet transfusions prior to surgery for people with a low platelet count (2018) · Cochrane
RR 1.6 [0.29, 8.92]1 study · 64 participantsVery low
Prophylactic platelet transfusion prior to surgery vs no prophylactic platelet transfusion prior to surgery
The number of participants with minor procedure‐related bleeding within 7 days of surgery · people with a low platelet count
Prophylactic platelet transfusions prior to surgery for people with a low platelet count (2018) · Cochrane
RR 1.29 [0.9, 1.85]1 study · 64 participantsVery low
Prophylactic platelet transfusion prior to surgery vs no prophylactic platelet transfusion prior to surgery
Serious adverse events (surgery‐related adverse effects within 30 days) · people with a low platelet count
Prophylactic platelet transfusions prior to surgery for people with a low platelet count (2018) · Cochrane
no estimate extracted1 study · 64 participantsVery low
Prophylactic platelet transfusion prior to surgery vs alternative treatments
All‐cause mortality within 30 days of surgery – not reported · people with a low platelet count
Prophylactic platelet transfusions prior to surgery for people with a low platelet count (2018) · Cochrane
no estimate extractedNRNo studies
Prophylactic platelet transfusion prior to surgery vs alternative treatments
Mortality secondary to bleeding within 30 days of surgery – not reported · people with a low platelet count
Prophylactic platelet transfusions prior to surgery for people with a low platelet count (2018) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Overall survival## · patients with multiple myeloma
Bisphosphonates in multiple myeloma: an updated network meta‐analysis (2017) · Cochrane
HR 0.9 [0.76, 1.07]14 studies · 2706 participantsModerate
Intervention NR
Progression‐free survival### · patients with multiple myeloma
Bisphosphonates in multiple myeloma: an updated network meta‐analysis (2017) · Cochrane
HR 0.75 [0.57, 1]7 studies · 908 participantsLow
Intervention NR
Vertebral fractures · patients with multiple myeloma
Bisphosphonates in multiple myeloma: an updated network meta‐analysis (2017) · Cochrane
RR 0.74 [0.62, 0.89]7 studies · 1116 participantsModerate
Intervention NR
Non‐vertebral fractures · patients with multiple myeloma
Bisphosphonates in multiple myeloma: an updated network meta‐analysis (2017) · Cochrane
RR 1.03 [0.68, 1.56]6 studies · 1389 participantsModerate
Intervention NR
Skeletal‐related events · patients with multiple myeloma
Bisphosphonates in multiple myeloma: an updated network meta‐analysis (2017) · Cochrane
RR 0.74 [0.63, 0.88]10 studies · 2141 participantsModerate
Intervention NR
Pain · patients with multiple myeloma
Bisphosphonates in multiple myeloma: an updated network meta‐analysis (2017) · Cochrane
RR 0.75 [0.6, 0.95]8 studies · 1281 participantsVery low
Intervention NR
Osteonecrosis of jaw · patients with multiple myeloma
Bisphosphonates in multiple myeloma: an updated network meta‐analysis (2017) · Cochrane
RR 4.61 [0.99, 21.35]6 studies · 1284 participantsLow
Intervention NR
Mortality (calculated instead of overall survival)
Chemotherapy alone versus chemotherapy plus radiotherapy for adults with early stage Hodgkin lymphoma (2017) · Cochrane
HR 0.48 [0.22, 1.06]5 studies · 1388 participantsModerate
Intervention NR
Relapse, progression or death (calculated instead of PFS) sensitivity analysis ‐ without HD6trial due to high risk of other bias
Chemotherapy alone versus chemotherapy plus radiotherapy for adults with early stage Hodgkin lymphoma (2017) · Cochrane
HR 0.24 [0.07, 0.88]900 participantsModerate
Intervention NR
Infection‐ related mortality
Chemotherapy alone versus chemotherapy plus radiotherapy for adults with early stage Hodgkin lymphoma (2017) · Cochrane
RR 6.9 [0.36, 132.34]1 study · 276 participantsLow
Intervention NR
Second cancer‐ related mortality
Chemotherapy alone versus chemotherapy plus radiotherapy for adults with early stage Hodgkin lymphoma (2017) · Cochrane
RR 2.22 [0.7, 7.03]1 study · 276 participantsLow
Intervention NR
Cardiac disease‐ related mortality
Chemotherapy alone versus chemotherapy plus radiotherapy for adults with early stage Hodgkin lymphoma (2017) · Cochrane
RR 0.99 [0.14, 6.9]1 study · 276 participantsLow
Intervention NR
Complete response rate
Chemotherapy alone versus chemotherapy plus radiotherapy for adults with early stage Hodgkin lymphoma (2017) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Mortality sensitivity analysis (calculated instead of overall survival) ‐ without UK NCRI Rapid trial and MSKCC trial #90‐44due to high risk of other bias
Chemotherapy alone versus chemotherapy plus radiotherapy for adults with early stage Hodgkin lymphoma (2017) · Cochrane
HR 0.31 [0.19, 0.52]3 studies · 816 participantsModerate
Intervention NR
Relapse, progression or death (calculated instead of PFS)
Chemotherapy alone versus chemotherapy plus radiotherapy for adults with early stage Hodgkin lymphoma (2017) · Cochrane
HR 0.42 [0.25, 0.72]4 studies · 1351 participantsModerate
Intervention NR
Infection‐ related mortality
Chemotherapy alone versus chemotherapy plus radiotherapy for adults with early stage Hodgkin lymphoma (2017) · Cochrane
RR 0.33 [0.01, 8.06]1 study · 152 participantsLow
Intervention NR
Second cancer‐ related mortality
Chemotherapy alone versus chemotherapy plus radiotherapy for adults with early stage Hodgkin lymphoma (2017) · Cochrane
RR 0.53 [0.07, 4.29]3 studies · 1199 participantsLow
Intervention NR
Cardiac disease‐ related mortality
Chemotherapy alone versus chemotherapy plus radiotherapy for adults with early stage Hodgkin lymphoma (2017) · Cochrane
RR 2.94 [0.31, 27.55]2 studies · 457 participantsLow
Intervention NR
Complete response rate
Chemotherapy alone versus chemotherapy plus radiotherapy for adults with early stage Hodgkin lymphoma (2017) · Cochrane
RR 1.08 [0.93, 1.25]3 studies · 376 participantsLow
Intervention NR
Mortality (calculated instead of overall survival)
Chemotherapy alone versus chemotherapy plus radiotherapy for adults with early stage Hodgkin lymphoma (2017) · Cochrane
HR 2.12 [1.03, 4.37]1 study · 276 participantsLow
Intervention NR
Relapse, progression or death (calculated instead of PFS)
Chemotherapy alone versus chemotherapy plus radiotherapy for adults with early stage Hodgkin lymphoma (2017) · Cochrane
HR 0.42 [0.14, 1.24]3 studies · 1176 participantsLow
Escalated BEACOPP vs chemotherapy including ABVD
Mortality · Patients with early unfavourable or advanced stage HL
Comparison of first‐line chemotherapy including escalated BEACOPP versus chemotherapy including ABVD for… (2017) · Cochrane
HR 0.74 [0.57, 0.97]5 studies · 3142 participantsHigh
Escalated BEACOPP vs chemotherapy including ABVD
Progression, relapse or death · Patients with early unfavourable or advanced stage HL
Comparison of first‐line chemotherapy including escalated BEACOPP versus chemotherapy including ABVD for… (2017) · Cochrane
HR 0.54 [0.45, 0.64]5 studies · 3142 participantsModerate
Escalated BEACOPP vs chemotherapy including ABVD
Adverse event: treatment‐related mortality · Patients with early unfavourable or advanced stage HL
Comparison of first‐line chemotherapy including escalated BEACOPP versus chemotherapy including ABVD for… (2017) · Cochrane
RR 2.15 [0.93, 4.95]4 studies · 2700 participantsLow
Escalated BEACOPP vs chemotherapy including ABVD
Adverse event: secondary malignancies · Patients with early unfavourable or advanced stage HL
Comparison of first‐line chemotherapy including escalated BEACOPP versus chemotherapy including ABVD for… (2017) · Cochrane
RR 1 [0.68, 1.48]5 studies · 3332 participantsLow