Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

15 questions · 15 findings · 3 reviews

No studies found 1 · 6.7%GRADE not reported 0 · 0%Very low 0 · 0%Low 11 · 73.3%Moderate 3 · 20%High 0 · 0%

Acetazolamide vs placebo

Incidence of acute mountain sickness (AMS)‐ Follow‐ up: From arrival to 24 hours later · participants at risk of high altitude illness

Acetazolamide probably leads to lower incidence of acute mountain sickness (AMS)‐ Follow‐ up: From arrival… compared with placebo (moderate certainty).

1 finding from 1 review

Acetazolamide vs placebo

Incidence of high altitude cerebral oedema (HACE) ‐ not reported · participants at risk of high altitude illness

Acetazolamide showed no clear difference in incidence of high altitude cerebral oedema (HACE)‐ Follow‐ up: From… compared with placebo (moderate certainty).

1 finding from 1 review

Acetazolamide vs placebo

Adverse events: Paresthesias‐ Follow‐ up: From arrival to 24 hours later · participants at risk of high altitude illness

Acetazolamide may leads to higher adverse events: Paresthesias‐ Follow‐ up: From arrival to 24 hours… compared with placebo (low certainty).

1 finding from 1 review

Intervention not reported

Acetazolamide + medroxyprogesterone versus medroxyprogesterone: risk of AMS · participants at risk of high altitude illness

The intervention showed no clear difference in acetazolamide + medroxyprogesterone versus medroxyprogesterone: risk… (low certainty).

1 finding from 1 review