Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,494 questions · 1,521 findings · 132 reviews · Hepato-Biliary

No studies found 303 · 19.9%GRADE not reported 39 · 2.6%Very low 876 · 57.6%Low 216 · 14.2%Moderate 65 · 4.3%High 22 · 1.4%

T‐tube drainage vs primary closure

Serious morbidity (rate) · patients undergoing open common bile duct exploration.

It is very uncertain whether T‐tube drainage changes serious morbidity (rate) compared with primary closure (very low certainty).

2 findings from 1 review

T‐tube drainage vs primary closure after laparoscopic common bile duct exploration

Serious morbidity (rate) · laparoscopic common bile duct exploration.

It is very uncertain whether T‐tube drainage changes serious morbidity (rate) compared with primary closure after laparoscopic common bile duct exploration (very low certainty).

2 findings from 1 review

Routine abdominal drain vs No drain

Serious adverse events (proportion of patients) · patients with laparoscopic cholecystectomy.

It is very uncertain whether routine abdominal drain changes serious adverse events (proportion of patients) compared with 'no drain' (very low certainty).

1 finding from 1 review

Routine abdominal drain vs No drain

Serious adverse events (number of events) · patients with laparoscopic cholecystectomy.

It is very uncertain whether routine abdominal drain changes serious adverse events (number of events) compared with 'no drain' (very low certainty).

1 finding from 1 review