Gap finder

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)

1,590 questions in 129 reviews · Gynaecological, Neuro-oncology and Orphan Cancer

current versions
No studies 281 · 17.7%Ungraded 74 · 4.7%Very low 410 · 25.8%Low 420 · 26.4%Moderate 280 · 17.6%High 125 · 7.9%

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
Laigle‐Donadey 2019: dexamfetamine sulfate vs placebo
Quality of life EORTC QLQ‐C30 · people with a primary brain tumour
Interventions for the management of fatigue in adults with a primary brain tumour (2022) · Cochrane
no estimate extracted1 study · 41 participantsVery low
Laigle‐Donadey 2019: dexamfetamine sulfate vs placebo
Quality of life EORTC QLQ‐BN 20 · people with a primary brain tumour
Interventions for the management of fatigue in adults with a primary brain tumour (2022) · Cochrane
no estimate extracted1 study · 41 participantsVery low
Porter 2020: armodafinil vs placebo
Fatigue Brief Fatigue Inventory (number of participants with an improvement in 2 points from baseline at 8 weeks (%)) · people with primary brain tumour
Interventions for the management of fatigue in adults with a primary brain tumour (2022) · Cochrane
no estimate extracted1 study · 297 participantsLow
Boele 2013: modafinil vs placebo
Fatigue –reduced motivation Subscale from CIS · people with a primary brain tumour
Interventions for the management of fatigue in adults with a primary brain tumour (2022) · Cochrane
no estimate extracted1 study · 37 participantsVery low
Porter 2020: armodafinil vs placebo
Cognition Symbol Digit Modalities Test (median (range)) · people with primary brain tumour
Interventions for the management of fatigue in adults with a primary brain tumour (2022) · Cochrane
no estimate extracted1 study · 180 participantsLow
Porter 2020: armodafinil vs placebo
Quality of life Linear Analogue Self Assessment (median (range)) · people with primary brain tumour
Interventions for the management of fatigue in adults with a primary brain tumour (2022) · Cochrane
no estimate extracted1 study · 232 participantsLow
Porter 2020: armodafinil vs placebo
Adverse events Grade 3 or higher (number of participants (%)) · people with primary brain tumour
Interventions for the management of fatigue in adults with a primary brain tumour (2022) · Cochrane
no estimate extracted1 study · 328 participantsLow
Boele 2013: modafinil vs placebo
Fatigue –reduced activity Subscale from CIS · people with a primary brain tumour
Interventions for the management of fatigue in adults with a primary brain tumour (2022) · Cochrane
no estimate extracted1 study · 37 participantsVery low
Boele 2013: modafinil vs placebo
Fatigue –severity Subscale from CIS · people with a primary brain tumour
Interventions for the management of fatigue in adults with a primary brain tumour (2022) · Cochrane
no estimate extracted1 study · 37 participantsVery low
Boele 2013: modafinil vs placebo
Adverse events ( · people with a primary brain tumour
Interventions for the management of fatigue in adults with a primary brain tumour (2022) · Cochrane
RR 2.79 [0.59, 13.16]1 study · 37 participantsVery low
Laigle‐Donadey 2019: dexamfetamine sulfate vs placebo
Fatigue MFI‐20 scale ( · people with a primary brain tumour
Interventions for the management of fatigue in adults with a primary brain tumour (2022) · Cochrane
no estimate extracted1 study · 41 participantsVery low
Laigle‐Donadey 2019: dexamfetamine sulfate vs placebo
Fatigue ('asthenia') Norris Scale · people with a primary brain tumour
Interventions for the management of fatigue in adults with a primary brain tumour (2022) · Cochrane
no estimate extracted1 study · 41 participantsVery low
Laigle‐Donadey 2019: dexamfetamine sulfate vs placebo
Cognition Trail Making Test A · people with a primary brain tumour
Interventions for the management of fatigue in adults with a primary brain tumour (2022) · Cochrane
no estimate extracted1 study · 41 participantsVery low
Laigle‐Donadey 2019: dexamfetamine sulfate vs placebo
Cognition Trail Making Test B · people with a primary brain tumour
Interventions for the management of fatigue in adults with a primary brain tumour (2022) · Cochrane
no estimate extracted1 study · 41 participantsVery low
Weekly paclitaxel plus carboplatin vs tri‐weekly paclitaxel plus carboplatin
Progression‐free survival (PFS) · first‐line treatment of ovarian cancer
Weekly versus tri‐weekly paclitaxel with carboplatin for first‐line treatment in women with epithelial… (2022) · Cochrane
HR 0.89 [0.81, 0.98]4 studies · 3699 participantsModerate
Weekly paclitaxel plus carboplatin vs tri‐weekly paclitaxel plus carboplatin
Overall survival (OS) · first‐line treatment of ovarian cancer
Weekly versus tri‐weekly paclitaxel with carboplatin for first‐line treatment in women with epithelial… (2022) · Cochrane
HR 0.92 [0.79, 1.06]4 studies · 3699 participantsHigh
Weekly paclitaxel plus carboplatin vs tri‐weekly paclitaxel plus carboplatin
Haematological adverse event: Grade 3/4 neutropenia · first‐line treatment of ovarian cancer
Weekly versus tri‐weekly paclitaxel with carboplatin for first‐line treatment in women with epithelial… (2022) · Cochrane
RR 1.11 [0.86, 1.43]4 studies · 3639 participantsModerate
Weekly paclitaxel plus carboplatin vs tri‐weekly paclitaxel plus carboplatin
Haematological adverse event: Grade 3/4 anaemia · first‐line treatment of ovarian cancer
Weekly versus tri‐weekly paclitaxel with carboplatin for first‐line treatment in women with epithelial… (2022) · Cochrane
RR 1.57 [1.12, 2.2]4 studies · 3639 participantsHigh
Weekly paclitaxel plus carboplatin vs tri‐weekly paclitaxel plus carboplatin
Neurological adverse event: Grade 3/4 neuropathy, not otherwise specified · first‐line treatment of ovarian cancer
Weekly versus tri‐weekly paclitaxel with carboplatin for first‐line treatment in women with epithelial… (2022) · Cochrane
RR 1.12 [0.64, 1.94]4 studies · 3639 participantsLow
Intervention NR
Test · adults with glioma Role: 1p/19q status is used for diagnosis, to inform treatment decisions and to give information on…
Diagnostic test accuracy and cost‐effectiveness of tests for codeletion of chromosomal arms 1p and 19q in… (2022) · Cochrane
no estimate extractedNRNo studies
Intervention NR
MS · adults with glioma Role: 1p/19q status is used for diagnosis, to inform treatment decisions and to give information on…
Diagnostic test accuracy and cost‐effectiveness of tests for codeletion of chromosomal arms 1p and 19q in… (2022) · Cochrane
no estimate extracted1 study · 10 participantsVery low
Intervention NR
NanoString · adults with glioma Role: 1p/19q status is used for diagnosis, to inform treatment decisions and to give information on…
Diagnostic test accuracy and cost‐effectiveness of tests for codeletion of chromosomal arms 1p and 19q in… (2022) · Cochrane
no estimate extracted1 study · 16 participantsVery low
Intervention NR
Test · adults with glioma Role: 1p/19q status is used for diagnosis, to inform treatment decisions and to give information on…
Diagnostic test accuracy and cost‐effectiveness of tests for codeletion of chromosomal arms 1p and 19q in… (2022) · Cochrane
no estimate extractedNRNo studies
Intervention NR
FISH · adults with glioma Role: 1p/19q status is used for diagnosis, to inform treatment decisions and to give information on…
Diagnostic test accuracy and cost‐effectiveness of tests for codeletion of chromosomal arms 1p and 19q in… (2022) · Cochrane
no estimate extracted15 studies · 915 participantsLow
Intervention NR
Real‐time PCR · adults with glioma Role: 1p/19q status is used for diagnosis, to inform treatment decisions and to give information on…
Diagnostic test accuracy and cost‐effectiveness of tests for codeletion of chromosomal arms 1p and 19q in… (2022) · Cochrane
no estimate extracted1 study · 10 participantsVery low
Intervention NR
MLPA · adults with glioma Role: 1p/19q status is used for diagnosis, to inform treatment decisions and to give information on…
Diagnostic test accuracy and cost‐effectiveness of tests for codeletion of chromosomal arms 1p and 19q in… (2022) · Cochrane
no estimate extracted1 study · 18 participantsVery low
Intervention NR
CGH · adults with glioma Role: 1p/19q status is used for diagnosis, to inform treatment decisions and to give information on…
Diagnostic test accuracy and cost‐effectiveness of tests for codeletion of chromosomal arms 1p and 19q in… (2022) · Cochrane
no estimate extracted6 studies · 151 participantsLow
Intervention NR
aCGH · adults with glioma Role: 1p/19q status is used for diagnosis, to inform treatment decisions and to give information on…
Diagnostic test accuracy and cost‐effectiveness of tests for codeletion of chromosomal arms 1p and 19q in… (2022) · Cochrane
no estimate extracted4 studies · 57 participantsHigh
Intervention NR
SNP array · adults with glioma Role: 1p/19q status is used for diagnosis, to inform treatment decisions and to give information on…
Diagnostic test accuracy and cost‐effectiveness of tests for codeletion of chromosomal arms 1p and 19q in… (2022) · Cochrane
no estimate extracted2 studies · 33 participantsVery low
Intervention NR
NGS · adults with glioma Role: 1p/19q status is used for diagnosis, to inform treatment decisions and to give information on…
Diagnostic test accuracy and cost‐effectiveness of tests for codeletion of chromosomal arms 1p and 19q in… (2022) · Cochrane
no estimate extracted1 study · 49 participantsVery low
Intervention NR
CISH · adults with glioma Role: 1p/19q status is used for diagnosis, to inform treatment decisions and to give information on…
Diagnostic test accuracy and cost‐effectiveness of tests for codeletion of chromosomal arms 1p and 19q in… (2022) · Cochrane
no estimate extracted1 study · 38 participantsHigh
Intervention NR
MS · adults with glioma Role: 1p/19q status is used for diagnosis, to inform treatment decisions and to give information on…
Diagnostic test accuracy and cost‐effectiveness of tests for codeletion of chromosomal arms 1p and 19q in… (2022) · Cochrane
no estimate extracted1 study · 50 participantsVery low
Intervention NR
G‐banding · adults with glioma Role: 1p/19q status is used for diagnosis, to inform treatment decisions and to give information on…
Diagnostic test accuracy and cost‐effectiveness of tests for codeletion of chromosomal arms 1p and 19q in… (2022) · Cochrane
no estimate extracted1 study · 21 participantsVery low
Intervention NR
PCR‐based LOH · adults with glioma Role: 1p/19q status is used for diagnosis, to inform treatment decisions and to give information on…
Diagnostic test accuracy and cost‐effectiveness of tests for codeletion of chromosomal arms 1p and 19q in… (2022) · Cochrane
no estimate extracted15 studies · 915 participantsLow
Intervention NR
Real‐time PCR · adults with glioma Role: 1p/19q status is used for diagnosis, to inform treatment decisions and to give information on…
Diagnostic test accuracy and cost‐effectiveness of tests for codeletion of chromosomal arms 1p and 19q in… (2022) · Cochrane
no estimate extracted2 studies · 40 participantsVery low
Intervention NR
MLPA · adults with glioma Role: 1p/19q status is used for diagnosis, to inform treatment decisions and to give information on…
Diagnostic test accuracy and cost‐effectiveness of tests for codeletion of chromosomal arms 1p and 19q in… (2022) · Cochrane
no estimate extracted2 studies · 33 participantsVery low
Intervention NR
CGH · adults with glioma Role: 1p/19q status is used for diagnosis, to inform treatment decisions and to give information on…
Diagnostic test accuracy and cost‐effectiveness of tests for codeletion of chromosomal arms 1p and 19q in… (2022) · Cochrane
no estimate extracted4 studies · 75 participantsLow
Intervention NR
aCGH · adults with glioma Role: 1p/19q status is used for diagnosis, to inform treatment decisions and to give information on…
Diagnostic test accuracy and cost‐effectiveness of tests for codeletion of chromosomal arms 1p and 19q in… (2022) · Cochrane
no estimate extracted3 studies · 39 participantsVery low
Intervention NR
SNP array · adults with glioma Role: 1p/19q status is used for diagnosis, to inform treatment decisions and to give information on…
Diagnostic test accuracy and cost‐effectiveness of tests for codeletion of chromosomal arms 1p and 19q in… (2022) · Cochrane
no estimate extracted6 studies · 111 participantsVery low
Intervention NR
NGS · adults with glioma Role: 1p/19q status is used for diagnosis, to inform treatment decisions and to give information on…
Diagnostic test accuracy and cost‐effectiveness of tests for codeletion of chromosomal arms 1p and 19q in… (2022) · Cochrane
no estimate extracted6 studies · 243 participantsLow
Intervention NR
Cognitive function using validated neuropsychological tests · patients with a primary brain tumour, within two weeks of surgical intervention
Early palliative interventions for improving outcomes in people with a primary malignant brain tumour and… (2022) · Cochrane
no estimate extracted1 study · 53 participantsVery low
Pre‐emptive antifungal therapy vs empirical antifungal therapy
All‐cause mortality · people with cancer who have febrile neutropenia
Pre‐emptive antifungal therapy versus empirical antifungal therapy for febrile neutropenia in people with… (2022) · Cochrane
RR 0.97 [0.72, 1.3]6 studies · 1459 participantsLow
Pre‐emptive antifungal therapy vs empirical antifungal therapy
Mortality ascribed to fungal infection · people with cancer who have febrile neutropenia
Pre‐emptive antifungal therapy versus empirical antifungal therapy for febrile neutropenia in people with… (2022) · Cochrane
RR 0.92 [0.45, 1.89]5 studies · 1407 participantsLow
Pre‐emptive antifungal therapy vs empirical antifungal therapy
Proportion of antifungal agent use (other than prophylactic use) · people with cancer who have febrile neutropenia
Pre‐emptive antifungal therapy versus empirical antifungal therapy for febrile neutropenia in people with… (2022) · Cochrane
RR 0.71 [0.47, 1.05]7 studies · 1480 participantsVery low
Pre‐emptive antifungal therapy vs empirical antifungal therapy
Duration of antifungal use (days) · people with cancer who have febrile neutropenia
Pre‐emptive antifungal therapy versus empirical antifungal therapy for febrile neutropenia in people with… (2022) · Cochrane
no estimate extracted3 studies · 764 participantsVery low
Pre‐emptive antifungal therapy vs empirical antifungal therapy
Invasive fungal infection detection · people with cancer who have febrile neutropenia
Pre‐emptive antifungal therapy versus empirical antifungal therapy for febrile neutropenia in people with… (2022) · Cochrane
RR 1.7 [0.71, 4.05]7 studies · 1480 participantsVery low
Pre‐emptive antifungal therapy vs empirical antifungal therapy
Adverse effects · people with cancer who have febrile neutropenia
Pre‐emptive antifungal therapy versus empirical antifungal therapy for febrile neutropenia in people with… (2022) · Cochrane
no estimate extracted4 studies · 1074 participantsVery low
Dexrazoxane vs no cardioprotective intervention or placebo
Clinical heart failure Available case analysis · adults with cancer receiving anthracyclines
Dexrazoxane for preventing or reducing cardiotoxicity in adults and children with cancer receiving… (2022) · Cochrane
RR 0.22 [0.11, 0.43]7 studies · 1221 participantsModerate
Dexrazoxane vs no cardioprotective intervention or placebo
Secondary malignant neoplasms · adults with cancer receiving anthracyclines
Dexrazoxane for preventing or reducing cardiotoxicity in adults and children with cancer receiving… (2022) · Cochrane
no estimate extractedNRNo studies
Dexrazoxane vs no cardioprotective intervention
Clinical heart failure Available‐case analysis · children with cancer receiving anthracyclines
Dexrazoxane for preventing or reducing cardiotoxicity in adults and children with cancer receiving… (2022) · Cochrane
RR 0.2 [0.01, 4.19]3 studies · 885 participantsLow