TABLE 2.

Comparison of Slopes Relating Parameters to Mean Transit Times for Recorded Curves and for Those of the Transfer Function

Slope of relationship with t̄	Recorded curves*			Transfer function
	N	Slope	SD†	N	Slope	SD†
σ	118	0.070	0.18	57	0.082	0.33
τ	116	0.149	0.43	57	0.16	0.54
π2½	118	0.181	0.48	57	0.182	0.36
t̄-ta	118	0.30	0.73	57	0.30	0.60
ta	118	0.70	0.73	57	0.70	0.60

^*Data from Bassingthwaighte and co-workers.¹

^†SD = 1 standard deviation of regression line at the mean t̄, which was 15.0 sec for the recorded curves and 9.1 sec for the transfer functions.