The methods introduced in [ 29] may offer a solution to this problem but it is too early to say; in this paper we have made the assumption that the distributions of covariates are comparable between datasets used for model development and validation purposes.
In addition, the only true validation of an animal model used for drug development purposes is whether it led to successful testing in human trials and thus to the subsequent release of a drug to the market.
The abstraction level and details considered during model development depend on the purpose for which simulated data should be generated.
We start by discussing several considerations in model development, such as the purpose of model building, the availability of qualitative versus quantitative data for model specification, the level of spatio-temporal detail required, and treatment of uncertainty.
A fit for purpose model development story should be included in the PBPK report.
For the purposes of model development and flow validation, Newtonian rheology is assumed, where the fluid density and viscosity is set to 1247.6 kg/m3 and 0.4 kg/(m s), respectively.
Indeed, the presence of data with uncertainties higher than a factor of four resulted, for the purposes of model development, in the deletion of the chemical in question.
These children were treated separately for the purpose of estimating the proportion of children who were investigated and prescribed antibiotics, but for the purposes of model development, these children were included in the group categorised as without serious bacterial infection.
OECD NEA sets up the "International Fuel Performance Experiments IFPEE) database", a public domain database on nuclear fuel performance experiments with the purpose of model development and code validation.
Accordingly, for the purpose of model development, it was assumed that the values for HbA1c, systolic BP, total cholesterol, and high-density lipoprotein did not change from the time of diagnosis for the study duration, and were used as model inputs.
