. Author manuscript; available in PMC: 2009 Apr 1.

Published in final edited form as: Physiol Meas. 2008 Mar 17;29(4):459–471. doi: 10.1088/0967-3334/29/4/004

Table 2.

Parameter Combinations									Sensitivity	Positive Predictivity
	Description	HR-Dependent BP Filter	λ_pos	λ_pre	Δ₀ (ms)	Δ₁ (ms)	α₀ (ms)	β₀ (ms)	Sensitivity	Positive Predictivity
1	Baseline	Yes	0.1	0.1	100	150	600	150	0.973	0.880
2	Fast adaptation	Yes	*0.5*	*0.5*	100	150	600	150	0.973	0.768
3	No adaptation	Yes	0	0	100	150	600	150	0.960	0.706
4	Fixed band-pass filter	No	0.1	0.1	*200*	*300*	600	150	0.973	0.794
5	Fixed band-pass filter	No	0.1	0.1	100	150	600	150	0.973	0.753

ms = Milliseconds, λ_pos , λ_pre = the weighting coefficient in Equations 1 and 2, Δ₀ = the desired time interval between an ICP peak and its lower limit to the R wave of ECG, Δ₁ = the desired time interval between an ICP peak and its upper limit to the R wave of ECG, α₀ = initial value of the upper limit for the time interval between ICP peak and the corresponding ECG R wave, β₀ = initial value of the lower limit for the time interval between ICP peak and the corresponding ECG R wave.