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Table 2 Parameters estimated from ATP fitting using the best model obtained from the best function derived using MS–NLME method, i.e. \(f_{4d}\)

From: Single-time-point dosimetry using model selection and nonlinear mixed-effects modelling: a proof of concept

Model parameters

Fixed effect (% coefficient of variation)

Random effect (variance, inter-patient variability)

\(A\)

129.36 (10.5) min

0.08

\(\alpha\)

0.31 (7.6)

0.01

\(\lambda_{1}\)a

1.5 × 10–4 (9.8)/min

2.9 × 10−4

\(\lambda_{2}\)b

8.8 × 10–4 (41.4)/min

1.1

Intra-patient variability

4.4 × 10–2 (21)

  1. aBiological decay \(\lambda_{1}\) corresponds to biological half-life \(T_{1/2}\) = (77.0 ± 0.8) h
  2. bBiological increase \(\lambda_{2}\) corresponds to biological half-life \(T_{1/2}\) = (13.1 ± 0.1) h