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)

303 questions in 64 reviews · Hepato-Biliary

current versions
No studies 303 · 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
D‐Penicillamine vs no intervention
Serious adverse events (number of events) · people with primary biliary cholangitis
Pharmacological interventions for primary biliary cholangitis (2017) · Cochrane
no estimate extractedNRNo studies
D‐Penicillamine vs no intervention
Health‐related quality of life · people with primary biliary cholangitis
Pharmacological interventions for primary biliary cholangitis (2017) · Cochrane
no estimate extractedNRNo studies
Colchicine plus ursodeoxycholic acid (UDCA) vs UDCA
Serious adverse events (number of events) · people with primary biliary cholangitis
Pharmacological interventions for primary biliary cholangitis (2017) · Cochrane
no estimate extractedNRNo studies
Colchicine plus ursodeoxycholic acid (UDCA) vs UDCA
Health‐related quality of life · people with primary biliary cholangitis
Pharmacological interventions for primary biliary cholangitis (2017) · Cochrane
no estimate extractedNRNo studies
Methotrexate plus ursodeoxycholic acid (UDCA) vs UDCA
Serious adverse events (proportion) · people with primary biliary cholangitis
Pharmacological interventions for primary biliary cholangitis (2017) · Cochrane
no estimate extractedNRNo studies
Methotrexate plus ursodeoxycholic acid (UDCA) vs UDCA
Serious adverse events (number of events) · people with primary biliary cholangitis
Pharmacological interventions for primary biliary cholangitis (2017) · Cochrane
no estimate extractedNRNo studies
Methotrexate plus ursodeoxycholic acid (UDCA) vs UDCA
Health‐related quality of life · people with primary biliary cholangitis
Pharmacological interventions for primary biliary cholangitis (2017) · Cochrane
no estimate extractedNRNo studies
Ursodeoxycholic acid (UDCA) vs no intervention
Serious adverse events (number of events) · people with primary biliary cholangitis
Pharmacological interventions for primary biliary cholangitis (2017) · Cochrane
no estimate extractedNRNo studies
Ursodeoxycholic acid (UDCA) vs no intervention
Health‐related quality of life · people with primary biliary cholangitis
Pharmacological interventions for primary biliary cholangitis (2017) · Cochrane
no estimate extractedNRNo studies
Azathioprine vs no intervention
Serious adverse events (proportion) · people with primary biliary cholangitis
Pharmacological interventions for primary biliary cholangitis (2017) · Cochrane
no estimate extractedNRNo studies
Azathioprine vs no intervention
Serious adverse events (number of events) · people with primary biliary cholangitis
Pharmacological interventions for primary biliary cholangitis (2017) · Cochrane
no estimate extractedNRNo studies
Azathioprine vs no intervention
Health‐related quality of life · people with primary biliary cholangitis
Pharmacological interventions for primary biliary cholangitis (2017) · Cochrane
no estimate extractedNRNo studies
Chemotherapy vs no chemotherapy
Short‐term and medium‐term mortality · people with intermediate‐stage hepatocellular carcinoma
Management of people with intermediate‐stage hepatocellular carcinoma (2017) · Cochrane
no estimate extractedNRNo studies
Chemotherapy vs no chemotherapy
Adverse events · people with intermediate‐stage hepatocellular carcinoma
Management of people with intermediate‐stage hepatocellular carcinoma (2017) · Cochrane
no estimate extractedNRNo studies
Chemotherapy vs no chemotherapy
Quality of life · people with intermediate‐stage hepatocellular carcinoma
Management of people with intermediate‐stage hepatocellular carcinoma (2017) · Cochrane
no estimate extractedNRNo studies
Chemotherapy vs no chemotherapy
Disease recurrence · people with intermediate‐stage hepatocellular carcinoma
Management of people with intermediate‐stage hepatocellular carcinoma (2017) · Cochrane
no estimate extractedNRNo studies
Chemotherapy vs no chemotherapy
Length of hospital stay · people with intermediate‐stage hepatocellular carcinoma
Management of people with intermediate‐stage hepatocellular carcinoma (2017) · Cochrane
no estimate extractedNRNo studies
Percutaneous alcohol injection vs radiofrequency ablation
Health‐related quality of life · people with early‐ or very early‐stage hepatocellular carcinoma ineligible for surgery
Management of people with early‐ or very early‐stage hepatocellular carcinoma (2017) · Cochrane
no estimate extractedNRNo studies
Laser ablation vs radiofrequency ablation
Serious adverse events (number of events) · people with early‐ or very early‐stage hepatocellular carcinoma ineligible for surgery
Management of people with early‐ or very early‐stage hepatocellular carcinoma (2017) · Cochrane
no estimate extractedNRNo studies
Laser ablation vs radiofrequency ablation
Health‐related quality of life · people with early‐ or very early‐stage hepatocellular carcinoma ineligible for surgery
Management of people with early‐ or very early‐stage hepatocellular carcinoma (2017) · Cochrane
no estimate extractedNRNo studies
Transarterial embolisation plus radiofrequency ablation vs radiofrequency ablation
Cancer‐related mortality at maximal · people with early‐ or very early‐stage hepatocellular carcinoma ineligible for surgery
Management of people with early‐ or very early‐stage hepatocellular carcinoma (2017) · Cochrane
no estimate extractedNRNo studies
Transarterial embolisation plus radiofrequency ablation vs radiofrequency ablation
Health‐related quality of life · people with early‐ or very early‐stage hepatocellular carcinoma ineligible for surgery
Management of people with early‐ or very early‐stage hepatocellular carcinoma (2017) · Cochrane
no estimate extractedNRNo studies
Transarterial embolisation plus percutaneous alcohol injection vs percutaneous alcohol injection
Serious adverse events (number of events) · people with early‐ or very early‐stage hepatocellular carcinoma ineligible for surgery
Management of people with early‐ or very early‐stage hepatocellular carcinoma (2017) · Cochrane
no estimate extractedNRNo studies
Transarterial embolisation plus percutaneous alcohol injection vs percutaneous alcohol injection
Health‐related quality of life · people with early‐ or very early‐stage hepatocellular carcinoma ineligible for surgery
Management of people with early‐ or very early‐stage hepatocellular carcinoma (2017) · Cochrane
no estimate extractedNRNo studies
Surgery vs radiofrequency ablation
Health‐related quality of life · people with early‐ or very early‐stage hepatocellular carcinoma eligible for surgery
Management of people with early‐ or very early‐stage hepatocellular carcinoma (2017) · Cochrane
no estimate extractedNRNo studies
Lactulose vs lactitol
Quality of life (secondary outcome) · prevention and treatment of hepatic encephalopathy in people with cirrhosis
Non‐absorbable disaccharides versus placebo/no intervention and lactulose versus lactitol for the prevention… (2016) · Cochrane
no estimate extractedNRNo studies
Intervention NR
There was no evidence of differences in the number of serious adverse events for any of the comparisons Quality of evidence = very low1,2,3. · people undergoing liver resection
Methods to decrease blood loss during liver resection: a network meta‐analysis (2016) · Cochrane
no estimate extractedNRNo studies
Intervention NR
None of the trials reported this outcome at any time point. · people undergoing liver resection
Methods to decrease blood loss during liver resection: a network meta‐analysis (2016) · Cochrane
no estimate extractedNRNo studies
Intervention NR
PEI versus PAI · hospitalised people with early HCC treated with PEI, PAI, or surgery.
Percutaneous ethanol injection or percutaneous acetic acid injection for early hepatocellular carcinoma (2015) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Number and type of adverse events · hospitalised people with early HCC treated with PEI, PAI, or surgery.
Percutaneous ethanol injection or percutaneous acetic acid injection for early hepatocellular carcinoma (2015) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Quality of life · hospitalised people with early HCC treated with PEI, PAI, or surgery.
Percutaneous ethanol injection or percutaneous acetic acid injection for early hepatocellular carcinoma (2015) · Cochrane
no estimate extractedNRNo studies
Intervention NR
PEI versus surgery · hospitalised people with early HCC treated with PEI, PAI, or surgery.
Percutaneous ethanol injection or percutaneous acetic acid injection for early hepatocellular carcinoma (2015) · Cochrane
no estimate extractedNRNo studies
Various interventions vs control
Opioids versus NSAIDs · people undergoing laparoscopic cholecystectomy
Pharmacological interventions for prevention or treatment of postoperative pain in people undergoing… (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Hospital stay · people undergoing laparoscopic cholecystectomy
Methods of intraperitoneal local anaesthetic instillation for laparoscopic cholecystectomy (2014) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Variceal bleeding 5 years · patients with chronic hepatitis C who have failed prior antiviral therapy and who have severe histologic disease…
Interferon for interferon nonresponding and relapsing patients with chronic hepatitis C (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Ascites 5 years · patients with chronic hepatitis C who have failed prior antiviral therapy and who have severe histologic disease…
Interferon for interferon nonresponding and relapsing patients with chronic hepatitis C (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Interferon vs. control · patients undergoing liver transplantation for chronic hepatitis C viral infection.
Antiviral prophylaxis for the prevention of chronic hepatitis C virus in patients undergoing liver… (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
HCV antibody vs. placebo · patients undergoing liver transplantation for chronic hepatitis C viral infection.
Antiviral prophylaxis for the prevention of chronic hepatitis C virus in patients undergoing liver… (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Interferon vs. control · patients undergoing liver transplantation for chronic hepatitis C viral infection.
Antiviral prophylaxis for the prevention of chronic hepatitis C virus in patients undergoing liver… (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
HCV antibody vs. placebo · patients undergoing liver transplantation for chronic hepatitis C viral infection.
Antiviral prophylaxis for the prevention of chronic hepatitis C virus in patients undergoing liver… (2013) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Serious adverse events ‐ Haemodilution versus control. · patients with liver resection.
Cardiopulmonary interventions to decrease blood loss and blood transfusion requirements for liver resection (2012) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Clinically apparent hepatitis A ( · patients with preventing hepatitis A.
Hepatitis A immunisation in persons not previously exposed to hepatitis A (2012) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Clinically apparent hepatitis A ( · patients with preventing hepatitis A.
Hepatitis A immunisation in persons not previously exposed to hepatitis A (2012) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Hepatitis A‐related mortality · patients with preventing hepatitis A.
Hepatitis A immunisation in persons not previously exposed to hepatitis A (2012) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Lack of sero‐protection, (anti HAV IgG < 10mIU/L) (low risk of bias) Maiwald 1997 · patients with preventing hepatitis A.
Hepatitis A immunisation in persons not previously exposed to hepatitis A (2012) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Lack of sero‐protection, (anti HAV IgG < 10mIU/L) (all included trials) Maiwald 1997 · patients with preventing hepatitis A.
Hepatitis A immunisation in persons not previously exposed to hepatitis A (2012) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Non‐serious local adverse events (low risk of bias) live attenuated HAV vaccine ICH‐GCP 1997 · patients with preventing hepatitis A.
Hepatitis A immunisation in persons not previously exposed to hepatitis A (2012) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Non‐serious local adverse events (all included studies) live attenuated HAV vaccine ICH‐GCP 1997 · patients with preventing hepatitis A.
Hepatitis A immunisation in persons not previously exposed to hepatitis A (2012) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Non‐serious systemic adverse events (low risk of bias) live attenuated HAV vaccine ICH‐GCP 1997 · patients with preventing hepatitis A.
Hepatitis A immunisation in persons not previously exposed to hepatitis A (2012) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Non‐serious systemic adverse events (all included studies) live attenuated HAV vaccine ICH‐GCP 1997 · patients with preventing hepatitis A.
Hepatitis A immunisation in persons not previously exposed to hepatitis A (2012) · Cochrane
no estimate extractedNRNo studies