Model diagrams and equations, straight from the code

Watch on YouTube Many pharmacometric reports have the same two items near the top of the methods section: a compartment diagram of the final model and the equations that define it. They are also two of the easiest things to get wrong. The diagram is usually drawn by hand in PowerPoint or Visio early in the analysis. The equations are typed into Word or LaTeX from the control stream. Then the model changes – a transit compartment is added, the effect goes from stimulation to inhibition, a covariate moves – and the code is updated but the figure and the math are not.