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)

281 questions in 50 reviews · Gynaecological, Neuro-oncology and Orphan Cancer

current versions
No studies 281 · 100%Ungraded 0 · 0%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

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
Neuronavigation image‐guided surgery vs standard surgery
Adverse events · high‐grade glioma
Intraoperative imaging technology to maximise extent of resection for glioma: a network meta‐analysis (2021) · Cochrane
no estimate extractedNRNo studies
Aspirin (ASA) vs vitamin K antagonist (VKA)
Minor bleeding ‐ not reported · ambulatory patients with multiple myeloma receiving immunomodulatory agents
Antithrombotic therapy for ambulatory patients with multiple myeloma receiving immunomodulatory agents (2021) · Cochrane
no estimate extractedNRNo studies
Aspirin (ASA) vs low molecular weight heparin (LMWH)
Major bleeding ‐ not reported · ambulatory patients with multiple myeloma receiving immunomodulatory agents
Antithrombotic therapy for ambulatory patients with multiple myeloma receiving immunomodulatory agents (2021) · Cochrane
no estimate extractedNRNo studies
Aspirin (ASA) vs low molecular weight heparin (LMWH)
Minor bleeding ‐ not reported · ambulatory patients with multiple myeloma receiving immunomodulatory agents
Antithrombotic therapy for ambulatory patients with multiple myeloma receiving immunomodulatory agents (2021) · Cochrane
no estimate extractedNRNo studies
Vitamin K antagonist (VKA) vs low molecular weight heparin (LMWH)
Major bleeding ‐ not reported · ambulatory patients with multiple myeloma receiving immunomodulatory agents
Antithrombotic therapy for ambulatory patients with multiple myeloma receiving immunomodulatory agents (2021) · Cochrane
no estimate extractedNRNo studies
Vitamin K antagonist (VKA) vs low molecular weight heparin (LMWH)
Major bleeding ‐ not reported · ambulatory patients with multiple myeloma receiving immunomodulatory agents
Antithrombotic therapy for ambulatory patients with multiple myeloma receiving immunomodulatory agents (2021) · Cochrane
no estimate extractedNRNo studies
Vitamin K antagonist (VKA) vs low molecular weight heparin (LMWH)
Minor bleeding ‐ not reported · ambulatory patients with multiple myeloma receiving immunomodulatory agents
Antithrombotic therapy for ambulatory patients with multiple myeloma receiving immunomodulatory agents (2021) · Cochrane
no estimate extractedNRNo studies
Aspirin (ASA) vs direct oral anticoagulants (DOAC)
All‐cause mortality ‐ not reported · ambulatory patients with multiple myeloma receiving immunomodulatory agents
Antithrombotic therapy for ambulatory patients with multiple myeloma receiving immunomodulatory agents (2021) · Cochrane
no estimate extractedNRNo studies
Aspirin (ASA) vs direct oral anticoagulants (DOAC)
Symptomatic deep vein thrombosis ‐ not reported · ambulatory patients with multiple myeloma receiving immunomodulatory agents
Antithrombotic therapy for ambulatory patients with multiple myeloma receiving immunomodulatory agents (2021) · Cochrane
no estimate extractedNRNo studies
Aspirin (ASA) vs direct oral anticoagulants (DOAC)
Major bleeding ‐ not reported · ambulatory patients with multiple myeloma receiving immunomodulatory agents
Antithrombotic therapy for ambulatory patients with multiple myeloma receiving immunomodulatory agents (2021) · Cochrane
no estimate extractedNRNo studies
Aspirin (ASA) vs vitamin K antagonist (VKA)
Major bleeding ‐ not reported · ambulatory patients with multiple myeloma receiving immunomodulatory agents
Antithrombotic therapy for ambulatory patients with multiple myeloma receiving immunomodulatory agents (2021) · Cochrane
no estimate extractedNRNo studies
Green tea extract supplementation vs placebo
Quality of life · adults (aged at least 18 years)
Green tea (Camellia sinensis) for the prevention of cancer (2020) · Cochrane
no estimate extractedNRNo studies
Hormone replacement therapy (HRT) vs no HRT
Incidence of gallstones
Hormone replacement therapy after surgery for epithelial ovarian cancer (2020) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Overall survivala · adult women with symptoms of endometrial cancer
Health education interventions to promote early presentation and referral for women with symptoms of… (2020) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Disease‐free survivalb · adult women with symptoms of endometrial cancer
Health education interventions to promote early presentation and referral for women with symptoms of… (2020) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Delayed referralc · adult women with symptoms of endometrial cancer
Health education interventions to promote early presentation and referral for women with symptoms of… (2020) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Delayed presentationd · adult women with symptoms of endometrial cancer
Health education interventions to promote early presentation and referral for women with symptoms of… (2020) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Referral time (days)e · adult women with symptoms of endometrial cancer
Health education interventions to promote early presentation and referral for women with symptoms of… (2020) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Presentation time (days)f · adult women with symptoms of endometrial cancer
Health education interventions to promote early presentation and referral for women with symptoms of… (2020) · Cochrane
no estimate extractedNRNo studies
Intervention NR
RIN_CRT vs CRT · elderly people with newly diagnosed glioblastoma Interventions: one treatment option Comparison: an alternative…
Treatment of newly diagnosed glioblastoma in the elderly: a network meta‐analysis (2020) · Cochrane
no estimate extractedNRNo studies
Intervention NR
TTF_AC vs CRT · elderly people with newly diagnosed glioblastoma Interventions: one treatment option Comparison: an alternative…
Treatment of newly diagnosed glioblastoma in the elderly: a network meta‐analysis (2020) · Cochrane
no estimate extractedNRNo studies
Intervention NR
IRI_BEV_RT vs CRT · elderly people with newly diagnosed glioblastoma Interventions: one treatment option Comparison: an alternative…
Treatment of newly diagnosed glioblastoma in the elderly: a network meta‐analysis (2020) · Cochrane
no estimate extractedNRNo studies
Intervention NR
RT vs supportive care only · elderly people with newly diagnosed glioblastoma
Treatment of newly diagnosed glioblastoma in the elderly: a network meta‐analysis (2020) · Cochrane
no estimate extractedNRNo studies
Abdominal paracentesis and intraperitoneal infusion of catumaxomab vs abdominal paracentesis alone
Improvement of ascites‐related symptoms · women with malignant ascites
Management of drainage for malignant ascites in gynaecological cancer (2019) · Cochrane
no estimate extractedNRNo studies
Abdominal paracentesis and intraperitoneal infusion of catumaxomab vs abdominal paracentesis alone
Participant satisfaction · women with malignant ascites
Management of drainage for malignant ascites in gynaecological cancer (2019) · Cochrane
no estimate extractedNRNo studies
Abdominal paracentesis and intraperitoneal infusion of catumaxomab vs abdominal paracentesis alone
Caregiver satisfaction · women with malignant ascites
Management of drainage for malignant ascites in gynaecological cancer (2019) · Cochrane
no estimate extractedNRNo studies
Abdominal paracentesis and intraperitoneal infusion of catumaxomab vs abdominal paracentesis alone
Cost‐effectiveness · women with malignant ascites
Management of drainage for malignant ascites in gynaecological cancer (2019) · Cochrane
no estimate extractedNRNo studies
Robot‐assisted surgery vs conventional laparoscopic surgery
Blood transfusions · gynaecology
Robot‐assisted surgery in gynaecology (2019) · Cochrane
no estimate extractedNRNo studies
mTOR inhibitors vs chemotherapy/hormone therapy
Quality of life ‐ not reported · women with advanced or recurrent endometrial cancer
PI3K/AKT/mTOR inhibitors for advanced or recurrent endometrial cancer (2019) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Caregiver physical functioning – not measured · caregiver well‐being
Interventions to help support caregivers of people with a brain or spinal cord tumour (2019) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Progression free survival · adults with glioblastoma
Interval brain imaging for adults with cerebral glioma (2019) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Anxiety · adults with glioblastoma
Interval brain imaging for adults with cerebral glioma (2019) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Quality of life · adults with glioblastoma
Interval brain imaging for adults with cerebral glioma (2019) · Cochrane
no estimate extractedNRNo studies
Two doses of HPV vaccine vs three doses of HPV vaccine
Clinical and harms outcomes* · 9‐ to 15‐year‐old females
Comparison of different human papillomavirus (HPV) vaccine types and dose schedules for prevention of… (2019) · Cochrane
no estimate extractedNRNo studies
Two doses of HPV vaccine with longer interval vs two doses of HPV vaccine with shorter interval
Invasive cervical, vaginal, vulval, anal, or penile cancer · 9‐ to 14‐year‐old females and males
Comparison of different human papillomavirus (HPV) vaccine types and dose schedules for prevention of… (2019) · Cochrane
no estimate extractedNRNo studies
Two doses of HPV vaccine with longer interval vs two doses of HPV vaccine with shorter interval
High‐grade cervical, vulval, vaginal, penile, or anal intraepithelial neoplasia · 9‐ to 14‐year‐old females and males
Comparison of different human papillomavirus (HPV) vaccine types and dose schedules for prevention of… (2019) · Cochrane
no estimate extractedNRNo studies
Two doses of HPV vaccine with longer interval vs two doses of HPV vaccine with shorter interval
Overall local/injection site adverse events · 9‐ to 14‐year‐old females and males
Comparison of different human papillomavirus (HPV) vaccine types and dose schedules for prevention of… (2019) · Cochrane
no estimate extractedNRNo studies
Two doses of HPV vaccine with longer interval vs two doses of HPV vaccine with shorter interval
Overall systemic events and general symptoms · 9‐ to 14‐year‐old females and males
Comparison of different human papillomavirus (HPV) vaccine types and dose schedules for prevention of… (2019) · Cochrane
no estimate extractedNRNo studies
Three doses HPV vaccine vs control
Invasive anal or penile cancer · 10‐ to 26‐year‐old males
Comparison of different human papillomavirus (HPV) vaccine types and dose schedules for prevention of… (2019) · Cochrane
no estimate extractedNRNo studies
Two doses of HPV vaccine vs three doses of HPV vaccine
High‐grade cervical intraepithelial neoplasia, adenocarcinoma in situ, and cervical cancer · 9‐ to 15‐year‐old females
Comparison of different human papillomavirus (HPV) vaccine types and dose schedules for prevention of… (2019) · Cochrane
no estimate extractedNRNo studies
Two doses of HPV vaccine vs three doses of HPV vaccine
High‐grade cervical, vulval, and vaginal disease · 9‐ to 15‐year‐old females
Comparison of different human papillomavirus (HPV) vaccine types and dose schedules for prevention of… (2019) · Cochrane
no estimate extractedNRNo studies
Two doses of HPV vaccine vs three doses of HPV vaccine
Overall local/injection site adverse events · 9‐ to 15‐year‐old females
Comparison of different human papillomavirus (HPV) vaccine types and dose schedules for prevention of… (2019) · Cochrane
no estimate extractedNRNo studies
Two doses of HPV vaccine vs three doses of HPV vaccine
Overall systemic events and general symptoms · 9‐ to 15‐year‐old females
Comparison of different human papillomavirus (HPV) vaccine types and dose schedules for prevention of… (2019) · Cochrane
no estimate extractedNRNo studies
Two doses of HPV vaccine with longer interval vs two doses of HPV vaccine with shorter interval
Clinical and harms outcomes* · 9‐ to 14‐year‐old females and males
Comparison of different human papillomavirus (HPV) vaccine types and dose schedules for prevention of… (2019) · Cochrane
no estimate extractedNRNo studies
Hyperbaric oxygen vs air breathing
Quality of life ‐ not reported · People undergoing radiotherapy for uterine cervical cancer
Hyperbaric oxygenation for tumour sensitisation to radiotherapy (2018) · Cochrane
no estimate extractedNRNo studies
Hyperbaric oxygen vs air breathing
Failure of local tumour control ‐ not reported · People with any one of a mixed group of cancers
Hyperbaric oxygenation for tumour sensitisation to radiotherapy (2018) · Cochrane
no estimate extractedNRNo studies
Hyperbaric oxygen vs air breathing
Local recurrence ‐ not reported · People with any one of a mixed group of cancers
Hyperbaric oxygenation for tumour sensitisation to radiotherapy (2018) · Cochrane
no estimate extractedNRNo studies
Hyperbaric oxygen vs air breathing
Quality of life ‐ not reported · People with any one of a mixed group of cancers
Hyperbaric oxygenation for tumour sensitisation to radiotherapy (2018) · Cochrane
no estimate extractedNRNo studies
Hyperbaric oxygen vs air breathing to enhance the effectiveness of radiotherapy
Quality of life ‐ not reported · People undergoing radiation therapy for head and neck cancer
Hyperbaric oxygenation for tumour sensitisation to radiotherapy (2018) · Cochrane
no estimate extractedNRNo studies
Hyperbaric oxygen vs air breathing
Failure of local tumour control ‐ not reported · People undergoing radiotherapy for uterine cervical cancer
Hyperbaric oxygenation for tumour sensitisation to radiotherapy (2018) · Cochrane
no estimate extractedNRNo studies