R package for the Evaluation Platform in COPD (EPIC), an agent-based whole-disease model for projection of health and economic outcomes and COPD interventions.
Predicted FEV1 equation, which is used to generate Gold stages was updated based on Hankinson JL, Odencrantz JR, Fedan KB. Spirometric reference values from a sample of the general US population. American journal of respiratory and critical care medicine. 1999 Jan 1;159(1):179-87.
Model structure was corrected in C for FEV1 Prevalence and FEV Incidence to account for squared height terms.
Terminology updated in input.R to make squared terms explicit.
Hankinson JL, Odencrantz JR, Fedan KB. Spirometric reference values from a sample of the general US population. American journal of respiratory and critical care medicine. 1999 Jan 1;159(1):179-87.