a factor with levels
200 and
300 giving the bovine blood flow rate (dL/min).
pressure
a numeric vector giving the transmembrane pressure (dmHg).
rate
the hemodialyzer ultrafiltration rate (mL/hr).
index
index of observation within subject—1 through 7.
Details
Vonesh and Carter (1992) describe data measured on high-flux
hemodialyzers to assess their in vivo ultrafiltration
characteristics. The ultrafiltration rates (in mL/hr) of 20 high-flux
dialyzers were measured at seven different transmembrane pressures (in
dmHg). The in vitro evaluation of the dialyzers used bovine
blood at flow rates of either 200~dl/min or 300~dl/min. The data,
are also analyzed in Littell, Milliken, Stroup, and Wolfinger (1996).
Source
Pinheiro, J. C. and Bates, D. M. (2000), Mixed-Effects Models in S
and S-PLUS, Springer, New York. (Appendix A.6)
Vonesh, E. F. and Carter, R. L. (1992), Mixed-effects nonlinear
regression for unbalanced repeated measures, Biometrics,
48, 1-18.
Littell, R. C., Milliken, G. A., Stroup, W. W. and Wolfinger,
R. D. (1996), SAS System for Mixed Models, SAS Institute,
Cary, NC.