Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

75 questions · 75 findings · 4 reviews · Injuries

No studies found 3 · 4%GRADE not reported 8 · 10.7%Very low 18 · 24%Low 38 · 50.7%Moderate 8 · 10.7%High 0 · 0%

Antifibrinolytic therapy - locally-applied tranexamic acid (TXA) mouthwash/solution (SoF eligibility: TXA or EACA; all included trials used topical TXA) vs placebo

All‐cause mortality (30 days post‐surgery) · people undergoing definitive fixation of hip, pelvic and long bone fractures

It is very uncertain whether topical tranexamic acid changes all‐cause mortality (30 days post‐surgery) compared with placebo (very low certainty).

1 finding from 1 review

Repetitive transcranial magnetic stimulation (rTMS) vs rTMS plus Tricyclic Anti‐depressant

Depression rating scale score · Post‐TBI Depression

It is very uncertain whether repetitive transcranial magnetic stimulation (rTMS) changes hamilton Rating Scale for Depression (HAM‐D); higher score means… compared with rTMS plus Tricyclic Anti‐depressant (very low certainty).

1 finding from 1 review

Acetaminophen plus Diphenhydramine vs placebo

Febrile reactions (fever with or without chills, chills with or without rigors) ‐ Intention‐to treat analysis · patients with requirement of prophylaxis to avoid allergic and febrile non‐haemolytic transfusion reactions

Acetaminophen plus Diphenhydramine showed no clear difference in febrile reactions (fever with or without chills, chills with or… compared with placebo (low certainty).

1 finding from 1 review

Acetaminophen plus Diphenhydrammine vs placebo (Unit of randomisation: transfusion)

Adverse events · patients with requirement of prophylaxis to avoid allergic and febrile non‐haemolytic transfusion reactions

Acetaminophen plus Diphenhydrammine led to lower adverse events compared with placebo (Unit of randomisation: transfusion); GRADE not reported.

1 finding from 1 review

Acetaminophen plus Diphenhydramine vs placebo

Anaphylatic reactions ‐ not reported · patients with requirement of prophylaxis to avoid allergic and febrile non‐haemolytic transfusion reactions

Acetaminophen plus Diphenhydramine led to lower anaphylatic reactions ‐ not reported compared with placebo; GRADE not reported.

1 finding from 1 review

Acetaminophen plus Diphenhydramine vs placebo

Death ‐ not reported · patients with requirement of prophylaxis to avoid allergic and febrile non‐haemolytic transfusion reactions

Acetaminophen plus Diphenhydramine led to lower death ‐ not reported compared with placebo; GRADE not reported.

1 finding from 1 review

Acetaminophen plus Diphenhydramine vs placebo

Adverse events · patients with requirement of prophylaxis to avoid allergic and febrile non‐haemolytic transfusion reactions

Acetaminophen plus Diphenhydramine led to lower adverse events compared with placebo; GRADE not reported.

1 finding from 1 review

Acetaminophen plus Diphenhydramine vs placebo

Allergic reactions (urticaria with or without pruritus) ‐ Intention‐to treat analysis · patients with requirement of prophylaxis to avoid allergic and febrile non‐haemolytic transfusion reactions

It is very uncertain whether acetaminophen plus Diphenhydramine changes allergic reactions (urticaria with or without pruritus) ‐… compared with placebo (very low certainty).

1 finding from 1 review

Acetaminophen plus Diphenhydrammine vs placebo (Unit of randomisation: transfusion)

Fever · patients with requirement of prophylaxis to avoid allergic and febrile non‐haemolytic transfusion reactions

Acetaminophen plus Diphenhydrammine showed no clear difference in fever ‐ Per protocol analysis compared with placebo (Unit of randomisation: transfusion) (low certainty).

1 finding from 1 review

Acetaminophen plus Diphenhydrammine vs placebo (Unit of randomisation: transfusion)

Anaphylatic reactions ‐ not reported · patients with requirement of prophylaxis to avoid allergic and febrile non‐haemolytic transfusion reactions

Acetaminophen plus Diphenhydrammine led to lower anaphylatic reactions ‐ not reported compared with placebo (Unit of randomisation: transfusion); GRADE not reported.

1 finding from 1 review

Acetaminophen plus Diphenhydrammine vs placebo (Unit of randomisation: transfusion)

Hives ‐ Per protocol analysis · patients with requirement of prophylaxis to avoid allergic and febrile non‐haemolytic transfusion reactions

Acetaminophen plus Diphenhydrammine showed no clear difference in hives ‐ Per protocol analysis compared with placebo (Unit of randomisation: transfusion) (low certainty).

1 finding from 1 review

Acetaminophen plus Diphenhydrammine vs placebo (Unit of randomisation: transfusion)

Death ‐ not reported · patients with requirement of prophylaxis to avoid allergic and febrile non‐haemolytic transfusion reactions

Acetaminophen plus Diphenhydrammine led to lower death ‐ not reported compared with placebo (Unit of randomisation: transfusion); GRADE not reported.

1 finding from 1 review