Table A1—

Summary of HRV test performance

E:I ratioValsalva ratioStanding (30:15) ratio
Sensitivity0.930.980.93
Specificity0.930.910.93
Positive predictive value0.930.910.92
Negative predictive value0.940.980.93
  • From A.I. Vinik and M. Risk, unpublished data.