Nonparametric pharmacokinetic calculations: one-compartment open model.

A nonparametric method suitable for estimation of parameters in nonlinear problems was developed for one-compartment pharmacokinetic data. The method was tested by running 500 simulations with various types of error and comparing the results with a standard nonlinear regression computation. The nonparametric method was superior to nonlinear regression techniques if the assumptions for the error structure of the regression were not true.