[Comparison of different adjustment models of curves of fecal excretion of transit markers].

Seventy nine fecal excretion curves of rare earth were adjusted with 3 published models (Grovum and Williams, 1973; Dhanoa et al, 1985; Siddons et al, 1983). The models provided statistically similar estimations of particulate turnover in the first compartment and mean retention time. However, some important individual differences between parameter values could be observed from one model to another.