RT Journal Article SR Electronic T1 A comparison of multi-component indices of COPD severity in primary care: An UNLOCK study from the IPCRG JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 2006 VO 42 IS Suppl 57 A1 Rupert Jones A1 David Price A1 Niels Chavannes A1 Amanda Lee A1 Elizabeth Gabe-Thomas A1 Bjorn Stallberg A1 Karin Lisspers A1 Josefin Sundh YR 2013 UL http://erj.ersjournals.com/content/42/Suppl_57/2006.abstract AB Objective: To compare the DOSE and ADO indices with a range of outcomes across multiple COPD populations, as gauges of COPD severity.Design: Real-life observational cohort study.Study population: 5486 primary care COPD patients : 4400 in the Optimal Patient Care database; 370 in Devon UK; 154 in a pulmonary rehabilitation programme rehabilitation in Holland; 562 in PRAXIS-study, Sweden.Main outcome measures: DOSE and ADO associations with CCQ and SGRQ; current and future exacerbations and hospital admissions and mortality.Results: Both DOSE and ADO indices inversely correlated with CCQ and SGRQ (p<0.001), DOSE was stronger across all items and with healthcare consumption markers (treatment-defined exacerbations, out of hours general practitioner visits and hospital admissions). DOSE, but not ADO, predicted future exacerbations and admissions. Both indices predicted mortality, ADO was the stronger of the two.View this table:Table 1: Rank correlations of DOSE and ADO indices with health status, exacerbations and future hospital admissionsConclusions: The DOSE index is better than the ADO index for predicting a wide range of outcomes in a diversity of COPD patients. The DOSE index is suitable a tool in routine clinical practice to identify those with current symptoms and future risk of exacerbations, admissions and mortality.