Table 3.

Bias, precision, and accuracy of dialysis unit BP measurements

Method No.Timing44 h-Systolic Ambulatory BP − Systolic BP (mmHg)44 h-Diastolic Ambulatory BP − Diastolic BP (mmHg)
Mean Difference Systolic BP95% CI of DifferenceSD of DifferenceAccuracyMean Difference Diastolic BP95% CI of DifferenceSD of DifferenceAccuracy
1Pre-HD−16.9−19.9, −13.817.824.5−6.28.0, −4.410.712.4
2Post-HD−4.0−6.9, −1.117.217.70.1−1.7, 1.910.610.6
3Intradialytic−5.4−8.0, −2.815.216.1−0.9−2.6, 0.810.010.0
4Intradialytic + pre-HD + post-HD−6.4−8.9, −3.914.716.0−1.3−3.0, 0.39.79.8
5Pre-HD + post-HD−10.6−13.1, −8.015.018.4−3.1−4.7, −1.49.710.2
  • BP, blood pressure; HD, hemodialysis.