Table 3 Comparisons of WatchBP with non-invasive comparators for cSBP (Study 2).

From: Accuracy of the WatchBP Office Central as a Type 2 device for non-invasive estimation of central aortic blood pressure in children and adolescents

Method

n

Comparisons

Group

WatchBP

Reference

Difference

95% CI

Corrected bias

PCMRI

27

57

Group 2

114.3 ± 8.7

102.5 ± 11.8*

11.8 ± 7.9

9.7–13.9

23.4

XCEL

10

19

Group 1

105.9 ± 11.5

91.4 ± 12.0*

14.5 ± 8.2

10.6–18.5

22.4

XCEL

29

59

Group 2

117.2 ± 9.4

103.7 ± 9.1*

13.5 ± 8.9

11.2–15.8

21.4

XCEL

39

78

Group 1 and 2

114.5 ± 11.0

100.7 ± 11.1*

13.8 ± 8.7

11.8–15.7

21.7

  1. Data presented as mean ± standard deviation. Pressures are in mmHg. Comparisons refer to the number of individual recordings. Corrected bias refers to the mean difference corrected for known or estimated biases in the respective non-invasive comparators.
  2. *p < 0.001 comparing WatchBP vs the reference method.
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