Table 2.

Bland and Altman analysis of wireless heart rate (HR) and respiratory rate (RR) versus reference monitor in postoperative patients

Parameter	No of measurement pairs	Bias	SD	Lower 95% LoA	Upper 95% LoA
Complete dataset
HR	55 565	−1.1	3.8	−8.8	6.5
RR	56 674	−2.3	6.8	−15.8	11.2
Filtered dataset*
HR	3986	−1.2	2.2	−5.7	3.2
RR	4001	−2.4	4.2	−10.8	5.9

*Dataset after applying a median filter.

LoA, limits of agreement.