General characteristics of our simulated asthmatic population.

The population was derived by sampling from the National Asthma Survey (NAS), with FEV1 (absolute and % predicted) imputed using individual spirometry data taken from the run-in period of the SLIC and SOCS trials. All other values are taken directly from NAS.Adherence (†) is defined as the fraction of days of use for patients using a particular medication.Smoking status (*) modeled in adults only, based on NAS data.