On Better Estimating and Normalizing the Relationship between Clinical Parameters: Comparing Respiratory Modulations in the Photoplethysmogram and Blood Pressure Signal (DPOP versus PPV)

<div>Alternative relationship line fits. (a) Least-squares forced through the origin: this method accounts for the relationship passing through the origin as expected from physiological considerations. (b) LMS method: this method is less susceptible to outliers, especially those which may skew the distribution. (c) LMSO method (LMS forced through origin): this combines the robust nature of the LMS method with the requirement for the relationship to pass through the origin.</div>

Computational and Mathematical Methods in Medicine

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Figure 5

Figure 5: On Better Estimating and Normalizing the Relationship between Clinical Parameters: Comparing Respiratory Modulations in the Photoplethysmogram and Blood Pressure Signal (DPOP versus PPV) 

Figure 5 | On Better Estimating and Normalizing the Relationship between Clinical Parameters: Comparing Respiratory Modulations in the Photoplethysmogram and Blood Pressure Signal (DPOP versus PPV) 