Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

3,696 questions · 3,815 findings · 855 reviews

No studies found 573 · 15%GRADE not reported 374 · 9.8%Very low 993 · 26%Low 1,062 · 27.8%Moderate 614 · 16.1%High 199 · 5.2%

Epidural analgesia vs intravenous patient‐controlled analgesia

All‐cause mortality rate at 30 days · adults having abdominal surgery

Epidural analgesia showed no clear difference in all‐cause mortality rate at 30 days compared with intravenous patient‐controlled analgesia (low certainty).

1 finding from 1 review

Intervention not reported

Overall morbidity (30‐day postoperative; procedure‐ and non‐procedure related) · patients with stones in the gallbladder and common bile duct undergoing laparoscopic cholecystectomy

The intervention showed no clear difference in overall morbidity (30‐day postoperative; procedure‐ and… (low certainty).

1 finding from 1 review

FIBRINOGEN: Therapeutic trials: intervention vs inactive control

All‐cause mortality Up to 28 days following admission · the prevention and treatment of bleeding in patients without haemophilia

FIBRINOGEN: Therapeutic trials: intervention showed no clear difference in all‐cause mortality Up to 28 days following admission compared with inactive Control (moderate certainty).

1 finding from 1 review

FIBRINOGEN: Prophylactic trials: intervention vs inactive control

Arterial thrombotic events ‐ up to 30 days post‐operatively · the prevention and treatment of bleeding in patients without haemophilia

FIBRINOGEN: Prophylactic trials: intervention showed no clear difference in arterial thrombotic events Up to 30 days post‐operatively compared with inactive control (low certainty).

2 findings from 1 review

FXIII: Prophylactic trials: intervention vs inactive control

Arterial thromboembolic events Post‐operatively · the prevention and treatment of bleeding in patients without haemophilia

FXIII: Prophylactic trials: intervention showed no clear difference in arterial thromboembolic events Up to 30 days post‐operatively compared with inactive control (low certainty).

1 finding from 1 review

FIBRINOGEN: Therapeutic trials: intervention vs inactive control

All‐cause mortality In‐hospital mortality up to 30 days post‐operatively · the prevention and treatment of bleeding in patients without haemophilia

FIBRINOGEN: Therapeutic trials: intervention showed no clear difference in all‐cause mortality In‐hospital mortality up to 30 days… compared with inactive Control (low certainty).

1 finding from 1 review

FXIII: Prophylactic trials: intervention vs inactive control

Venous thromboembolic events Up to 30 days post‐operatively · the prevention and treatment of bleeding in patients without haemophilia

FXIII: Prophylactic trials: intervention showed no clear difference in venous thromboembolic events Up to 30 days post‐operatively compared with inactive control (low certainty).

1 finding from 1 review

FIBRINOGEN: Therapeutic trials: intervention vs inactive control

All‐cause mortality Up to 28 days post‐operatively · the prevention and treatment of bleeding in patients without haemophilia

FIBRINOGEN: Therapeutic trials: intervention showed no clear difference in all‐cause mortality Up to 46 days post‐operatively compared with inactive Control (high certainty).

1 finding from 1 review

FIBRINOGEN: Therapeutic trials: intervention vs haemostatically active control

All‐cause mortality Up to 28 days post‐operatively · the prevention and treatment of bleeding in patients without haemophilia
2 findings from 1 review

Intervention not reported

Next‐day alertness Participant reports. Scale from: 0 to 10 points; higher scores equalled better outcome; CFB and double‐blind average values included · Patients with insomnia
1 finding from 1 review

Transfusion of RBCs of shorter vs longer storage duration

Mortality: in‐hospital mortality (within 7 days) · all conditions

It is very uncertain whether transfusion of RBCs of shorter changes mortality: in‐hospital mortality (within 7 days) compared with longer storage duration (very low certainty).

1 finding from 1 review

Transfusion of RBCs of shorter vs standard practice storage duration

Mortality: short‐term mortality (up to 30 days) ‐ neonates · all conditions

It is very uncertain whether transfusion of RBCs of shorter changes mortality: short‐term mortality (up to 30 days) ‐ neonates compared with standard practice storage duration (very low certainty).

1 finding from 1 review

Transfusion of RBCs of shorter vs standard practice storage duration

Mortality: short‐term mortality (up to 30 days) ‐ adults · all conditions

Transfusion of RBCs of shorter showed no clear difference in mortality: short‐term mortality (up to 30 days) ‐ adults compared with standard practice storage duration (moderate certainty).

1 finding from 1 review