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Table 2 Mean operator values and mean inter-operator differences for the carotid-femoral pulse wave velocity measurements and radial artery pulse wave analysis

From: Reproducibility of carotid-femoral pulse wave velocity in end-stage renal disease patients: methodological considerations

Parameter Group Mean operator values Mean difference p value
±SD (95 % CI)
Carotid-femoral PWV
cf-PWV (m/s) HS 6.3 ± 1.2 −0.7 (−1.3 to −0.11) 0.020
ESRD 8.7 ± 2.9 −0.4 (−1.2 to 0.4) 0.390
Subtracted cf-distance (mm) HS 466 ± 33 +7.9 (2.3 to 13.5) 0.007
ESRD 470 ± 36 +8.4 (0.1 to 16.8) 0.050
cf mean time (ms) HS 77 ± 12 +8.2 (3.1 to 13.2) 0.002
ESRD 60 ± 21 +5.7 (0.4 to 11.0) 0.040
SBP (mmHg) HS 117 ± 12 −2.3 (−5.3 to 0.7) 0.130
ESRD 138 ± 22 +1.3 (−3.3 to 5.9) 0.580
DBP (mm Hg) HS 70 ± 9 −1.3 (−2.9 to 0.3) 0.100
  ESRD 67 ± 10 +0.9 (−1.2 to 2.9) 0.620
Radial artery PWA
AIx@HR75 (%) HS 15 ± 14 −0.5 (−2.7 to 1.7) 0.630
ESRD 24 ± 11 −1.5 (−6.2 to 3.1) 0.520
Central pulse pressure (mm Hg) HS 35 ± 5 +0.3 (−1.3 to 1.9) 0.680
ESRD 57 ± 20 +0.3 (−3.0 to 3.5) 0.870
  1. AIx@HR75 augmentation index corrected for heart rate at 75 beats per minute, cf carotid-femoral, CI confidence interval, DBP diastolic blood pressure, ESRD end-stage renal disease, HS healthy subjects, PWA pulse wave analysis, PWV pulse wave velocity (m/s), SBP systolic blood pressure