Fig. 2: Agreement between the reference respiratory rate values (computed from the chest impedance pneumogram) and the camera estimates for the valid video camera data, comprising a total estimated time of approximately 119.8 h.
From: Non-contact physiological monitoring of post-operative patients in the intensive care unit
a The differences between the two estimates. b The Bland-Altman plot presents negligible sensor bias. c The plot shows a positive correlation between the two devices, with a Pearson correlation coefficient of 0.82. d The distribution of the mean values shows that most of the respiratory rate estimates are within the expected physiological range for adults. brpm = breaths/min.
