EXACT and Evaluating Respiratory Symptoms were developed and validated between 2010 and 2014.
The name of the E-RS changed from EXACT-Respiratory Symptoms Scale to Evaluating Respiratory Symptoms in 2016.
Pulmonary Disease, Chronic Obstructive
Leidy NK, Murray LT, Monz BU, Nelsen L, Goldman M, Jones PW, Dansie EJ, Sethi S. Measuring respiratory symptoms of COPD: performance of the EXACT- Respiratory Symptoms Tool (E-RS) in three clinical trials. Respir Res. 2014 Oct 7;15(1):124 (Full Text)