Findings

What do systematic reviews say?

1 questions · 1 findings · 1 reviews · Anaesthesia

No studies found 0 · 0%GRADE not reported 0 · 0%Very low 1 · 100%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Heart rate variability LF/HF ratio · patients with preoperative anxiety

1 finding from 1 review

Music interventions for preoperative anxiety 2013 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 241 participants
Very low