What is a time step and how does it affect IEUBK model predictions?
Time step is a variable that determines what averaging time is used to define average daily intakes of lead. For example, if the default time step is considered to be one year (because point estimates may be specified for each year of the seven years of exposure), choosing a time step of one month would result in dividing the lead intake by twelve; however, integrating the monthly exposures over a one-year period results in essentially the same lead intake as a one-year time step. For this reason, the model predictions of blood lead concentrations for each age group are essentially independent of the choice of the modeling time step.
