RT Journal Article SR Electronic T1 Performance of utility instruments in evaluating response to CPAP in patients with obstructive sleep apnea JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP P2019 VO 44 IS Suppl 58 A1 Fabienne L. Huber A1 Tsogyal D. Latshang A1 Malcolm Kohler A1 Yvonne Nussbaumer-Ochsner A1 Otto D. Schoch A1 Irene Laube A1 Edelbert Imhof A1 Alexander J. Turk A1 Robert Thurnheer A1 Oliver Senn A1 Konrad E. Bloch YR 2014 UL http://erj.ersjournals.com/content/44/Suppl_58/P2019.abstract AB Introduction: In patients with obstructive sleep apnea syndrome (OSAS), evaluation of subjective health preference (utility) is not well established although it is essential for cost-effectiveness analysis. Therefore, we compared the response of several utility instruments to continuous positive airway pressure (CPAP) therapy in patients with OSAS. Methods: 172 OSAS patients underwent evaluation of utility by several instruments and sleep studies before initiation of CPAP therapy and after 2 years. Mean changes and effect sizes (ES=change/SD of mean baseline value) were computed. Results: After 2y of CPAP the apnea/hypopnea index (AHI) was in the normal range. The changes in utility measured by different instruments varied largely.View this table:Effect of 2y of CPAPConclusion: In OSAS patients different utility instruments used in cost-effectiveness analyses reveal large differences in responsiveness to CPAP. The SF-6D and the visual analog scale (Euro-thermometer) had moderate effect sizes, the standard gamble and EQ-5D instruments were non-responsive to CPAP. Grants: SwissNationalFoundation, LungeZürich, Lungenliga St.Gallen, ResMed, PhilipsRespironics.