To the Editors:
Prognostic indices represent clinicians’ and scientists’ best intentions to improve the care of patients. Implicit in the development of indices is that they will allow a better understanding of patients’ needs in relation to an underlying disease. Chronic obstructive pulmonary disease (COPD) is a chronic respiratory condition with a high impact on patients’ wellbeing, health care utilisation and mortality [1]. To date, 15 prognostic indices for COPD patients have been reported since the publication of the BODE (body mass index, …