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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)

1,521 questions in 132 reviews · Hepato-Biliary

current versions
No studies 303 · 19.9%Ungraded 39 · 2.6%Very low 876 · 57.6%Low 216 · 14.2%Moderate 65 · 4.3%High 22 · 1.4%

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
Non‐absorbable disaccharides vs placebo/no intervention
Serious adverse events · 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
RR 0.47 [0.36, 0.6]24 studies · 1487 participantsModerate
Non‐absorbable disaccharides vs placebo/no intervention
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 extractedNRVery low
Non‐absorbable disaccharides vs placebo/no intervention
Non‐serious adverse events (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
RR 2.47 [1.24, 4.93]9 studies · 739 participantsVery low
Lactulose vs lactitol
Mortality · 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
RR 1.3 [0.59, 2.85]8 studies · 225 participantsVery low
Lactulose vs lactitol
Hepatic encephalopathy · 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
RR 1 [0.84, 1.19]7 studies · 194 participantsVery low
Lactulose vs lactitol
Serious adverse events · 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
RR 1.56 [0.84, 2.88]9 studies · 245 participantsVery low
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
Non‐steroid anti‐inflammatory drugs vs placebo
Lack of pain relief · people with biliary colic
Non‐steroid anti‐inflammatory drugs for biliary colic (2016) · Cochrane
RR 0.27 [0.19, 0.4]5 studies · 208 participantsModerate
Non‐steroid anti‐inflammatory drugs vs placebo
Cholelithiasis‐related complications · people with biliary colic
Non‐steroid anti‐inflammatory drugs for biliary colic (2016) · Cochrane
RR 0.66 [0.38, 1.15]3 studies · 140 participantsVery low
Non‐steroid anti‐inflammatory drugs vs opioids
Lack of pain relief · people with biliary colic
Non‐steroid anti‐inflammatory drugs for biliary colic (2016) · Cochrane
RR 0.98 [0.47, 2.07]4 studies · 459 participantsVery low
Non‐steroid anti‐inflammatory drugs vs opioids
Cholelithiasis‐related complications · people with biliary colic
Non‐steroid anti‐inflammatory drugs for biliary colic (2016) · Cochrane
RR 0.88 [0.14, 5.42]1 study · 30 participantsVery low
Non‐steroid anti‐inflammatory drugs vs spasmolytic drugs
Lack of pain relief · people with biliary colic
Non‐steroid anti‐inflammatory drugs for biliary colic (2016) · Cochrane
RR 0.51 [0.37, 0.71]4 studies · 190 participantsLow
Non‐steroid anti‐inflammatory drugs vs spasmolytic drugs
Cholelithiasis‐related complications · people with biliary colic
Non‐steroid anti‐inflammatory drugs for biliary colic (2016) · Cochrane
RR 0.27 [0.12, 0.57]2 studies · 104 participantsLow
Intervention NR
There was no evidence of differences in the proportion of participants experiencing 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 extractedNRVery low
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
Overall survival · 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 extracted185 participantsLow
Intervention NR
Recurrence‐free survival · 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 extracted185 participantsLow
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
Duration of hospital stay · 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 extracted125 participantsVery low
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
Cyanoacrylate vs band ligation
Mortality Total of deaths and the end of · acute bleeding gastric varices in people with portal hypertension
Endoscopic injection of cyanoacrylate glue versus other endoscopic procedures for acute bleeding gastric… (2015) · Cochrane
RR 0.83 [0.52, 1.31]4 studies · 365 participantsVery low
Cyanoacrylate 1 mL vs cyanoacrylate 0.5 mL
Re‐bleeding Bleeding after initial success in the intervention · acute bleeding gastric varices in people with portal hypertension
Endoscopic injection of cyanoacrylate glue versus other endoscopic procedures for acute bleeding gastric… (2015) · Cochrane
RR 1.3 [0.73, 2.31]1 study · 91 participantsVery low
Cyanoacrylate 1 mL vs cyanoacrylate 0.5 mL
Control of bleeding Success in control the active variceal bleeding · acute bleeding gastric varices in people with portal hypertension
Endoscopic injection of cyanoacrylate glue versus other endoscopic procedures for acute bleeding gastric… (2015) · Cochrane
RR 1.04 [0.78, 1.38]1 study · 25 participantsVery low
Cyanoacrylate vs alcohol
Mortality Total deaths at 30 days · acute bleeding gastric varices in people with portal hypertension
Endoscopic injection of cyanoacrylate glue versus other endoscopic procedures for acute bleeding gastric… (2015) · Cochrane
RR 0.43 [0.09, 2.04]1 study · 37 participantsVery low
Cyanoacrylate vs alcohol
Failure of intervention · acute bleeding gastric varices in people with portal hypertension
Endoscopic injection of cyanoacrylate glue versus other endoscopic procedures for acute bleeding gastric… (2015) · Cochrane
RR 0.36 [0.09, 1.35]1 study · 17 participantsVery low
Cyanoacrylate vs alcohol
Complications (fever) Presence of fever · acute bleeding gastric varices in people with portal hypertension
Endoscopic injection of cyanoacrylate glue versus other endoscopic procedures for acute bleeding gastric… (2015) · Cochrane
RR 0.43 [0.22, 0.8]1 study · 37 participantsVery low
Cyanoacrylate vs alcohol
Re‐bleeding Re‐bleeding after intervention · acute bleeding gastric varices in people with portal hypertension
Endoscopic injection of cyanoacrylate glue versus other endoscopic procedures for acute bleeding gastric… (2015) · Cochrane
RR 0.85 [0.3, 2.45]1 study · 37 participantsVery low
Cyanoacrylate vs alcohol
Control of bleeding Success in controlling the active variceal bleeding · acute bleeding gastric varices in people with portal hypertension
Endoscopic injection of cyanoacrylate glue versus other endoscopic procedures for acute bleeding gastric… (2015) · Cochrane
RR 1.79 [1.13, 2.84]1 study · 37 participantsVery low
Cyanoacrylate vs band ligation
Failure of intervention Continuous variceal bleeding after intervention · acute bleeding gastric varices in people with portal hypertension
Endoscopic injection of cyanoacrylate glue versus other endoscopic procedures for acute bleeding gastric… (2015) · Cochrane
RR 1.13 [0.23, 5.69]4 studies · 264 participantsVery low
Cyanoacrylate vs band ligation
Re‐bleeding Re‐bleeding after the bleeding was controlled in the first intervention · acute bleeding gastric varices in people with portal hypertension
Endoscopic injection of cyanoacrylate glue versus other endoscopic procedures for acute bleeding gastric… (2015) · Cochrane
RR 0.6 [0.41, 0.88]4 studies · 360 participantsLow
Cyanoacrylate vs band ligation
Complications (general) Number of total complications · acute bleeding gastric varices in people with portal hypertension
Endoscopic injection of cyanoacrylate glue versus other endoscopic procedures for acute bleeding gastric… (2015) · Cochrane
RR 2.81 [0.69, 11.49]3 studies · 307 participantsVery low
Cyanoacrylate vs band ligation
Control of bleeding Success in control variceal bleeding · acute bleeding gastric varices in people with portal hypertension
Endoscopic injection of cyanoacrylate glue versus other endoscopic procedures for acute bleeding gastric… (2015) · Cochrane
RR 1.07 [0.9, 1.27]4 studies · 264 participantsVery low
Cyanoacrylate 1 mL vs cyanoacrylate 0.5 mL
Total mortality Total deaths and the end of · acute bleeding gastric varices in people with portal hypertension
Endoscopic injection of cyanoacrylate glue versus other endoscopic procedures for acute bleeding gastric… (2015) · Cochrane
RR 1.02 [0.65, 1.6]1 study · 91 participantsVery low
Cyanoacrylate 1 mL vs cyanoacrylate 0.5 mL
day ‐ mortality Mortality due to bleeding · acute bleeding gastric varices in people with portal hypertension
Endoscopic injection of cyanoacrylate glue versus other endoscopic procedures for acute bleeding gastric… (2015) · Cochrane
RR 1.07 [0.41, 2.8]1 study · 91 participantsVery low
Cyanoacrylate 1 mL vs cyanoacrylate 0.5 mL
Failure of intervention Continuous bleeding after intervention · acute bleeding gastric varices in people with portal hypertension
Endoscopic injection of cyanoacrylate glue versus other endoscopic procedures for acute bleeding gastric… (2015) · Cochrane
RR 1.07 [0.56, 2.05]1 study · 91 participantsVery low
Cyanoacrylate 1 mL vs cyanoacrylate 0.5 mL
Complications (fever) Presence of fever · acute bleeding gastric varices in people with portal hypertension
Endoscopic injection of cyanoacrylate glue versus other endoscopic procedures for acute bleeding gastric… (2015) · Cochrane
RR 0.56 [0.32, 0.98]1 study · 91 participantsVery low
Intervention NR
Mortality · patients with hepatic encephalopathy.
Dopamine agents for hepatic encephalopathy (2014) · Cochrane
OR 1.11 [0.35, 3.54]144 participantsLow
Intervention NR
Hepatic encephalopathy · patients with hepatic encephalopathy.
Dopamine agents for hepatic encephalopathy (2014) · Cochrane
OR 2.99 [0.09, 100.55]80 participantsLow
Peginterferon plus ribavirin vs non‐pegylated interferon plus ribavirin
Liver‐related morbidity plus all‐cause mortality · patients with chronic hepatitis C.
Peginterferon plus ribavirin versus interferon plus ribavirin for chronic hepatitis C (2014) · Cochrane
OR 1.14 [0.38, 3.42]1789 participantsLow
Peginterferon plus ribavirin vs non‐pegylated interferon plus ribavirin
Adverse events leading to treatment discontinuation · patients with chronic hepatitis C.
Peginterferon plus ribavirin versus interferon plus ribavirin for chronic hepatitis C (2014) · Cochrane
RR 0.86 [0.68, 1.09]15 studies · 4571 participantsLow
Peginterferon plus ribavirin vs non‐pegylated interferon plus ribavirin
Sustained virological response · patients with chronic hepatitis C.
Peginterferon plus ribavirin versus interferon plus ribavirin for chronic hepatitis C (2014) · Cochrane
RR 1.39 [1.25, 1.56]27 studies · 6104 participantsVery low
Peginterferon alpha‐2a vs peginterferon alpha‐2b
All‐cause mortality Deaths during and after the treatment · patients with chronic hepatitis C.
Peginterferon alpha‐2a versus peginterferon alpha‐2b for chronic hepatitis C (2014) · Cochrane
RR 1.97 [0.64, 6.08]1 study · 3070 participantsVery low
Peginterferon alpha‐2a vs peginterferon alpha‐2b
Liver‐related morbidity Number of events · patients with chronic hepatitis C.
Peginterferon alpha‐2a versus peginterferon alpha‐2b for chronic hepatitis C (2014) · Cochrane
RR 3 [0.7, 12.93]1 study · 36 participantsVery low
Peginterferon alpha‐2a vs peginterferon alpha‐2b
Serious adverse events Number of events · patients with chronic hepatitis C.
Peginterferon alpha‐2a versus peginterferon alpha‐2b for chronic hepatitis C (2014) · Cochrane
RR 1.12 [0.95, 1.3]4 studies · 3900 participantsLow
Peginterferon alpha‐2a vs peginterferon alpha‐2b
Adverse events leading to treatment discontinuation Number of events · patients with chronic hepatitis C.
Peginterferon alpha‐2a versus peginterferon alpha‐2b for chronic hepatitis C (2014) · Cochrane
RR 0.84 [0.57, 1.22]12 studies · 5340 participantsLow
Peginterferon alpha‐2a vs peginterferon alpha‐2b
All other (non‐serious) adverse events · patients with chronic hepatitis C.
Peginterferon alpha‐2a versus peginterferon alpha‐2b for chronic hepatitis C (2014) · Cochrane
no estimate extracted9 studies · 4981 participantsVery low
Peginterferon alpha‐2a vs peginterferon alpha‐2b
Quality of life SF 36 and CLDQ · patients with chronic hepatitis C.
Peginterferon alpha‐2a versus peginterferon alpha‐2b for chronic hepatitis C (2014) · Cochrane
no estimate extracted1 study · 434 participantsVery low