@article {Kusunose996, author = {Masaaki Kusunose and Ryo Sanda and Ayumi Narita and Koichi Nishimura}, title = {Comparison between tools for measuring breathlessness: cross-sectional observation and predictive properties}, volume = {56}, number = {suppl 64}, elocation-id = {996}, year = {2020}, doi = {10.1183/13993003.congress-2020.996}, publisher = {European Respiratory Society}, abstract = {Background: Dyspnoea is one of the most important symptoms of chronic obstructive pulmonary disease (COPD), but it{\textquoteright}s not easy to measure this perception. The Baseline Dyspnea Index (BDI), the Dyspnoea-12 (D-12) and the Activity component of the St. George{\textquoteright}s Respiratory Questionnaire (SGRQ) were all recognized as tools for measuring dyspnea.Aim: To directly compare the measuring properties of tools in patients with COPD.Methods: One hundred and twenty-two outpatients with stable COPD were recruited (74.5 {\textpm} 6.4 years) and completed the questionnaires of the BDI, D-12 and SGRQ Activity as well as spirometry. The survival status, episodes of acute exacerbation of COPD (AECOPD) and hospital admission due to AECOPD were recorded.Results: The scores of the BDI, D-12 and SGRQ Activity showed moderate correlations with each other (|Rs|= 0.53 to 0.66). FEV1 is weakly or moderately associated with the BDI (Rs = 0.40), D-12 (Rs = 0.30) and SGRQ Activity (Rs = 0.42). Eighteen patients (14.8\%) have died and AECOPD events were identified in 66 out of 117 available subjects (56.4\%). Forty-one patients out of 119 available subjects (34.5\%) have been admitted to hospital due to AECOPD at least once during the follow-up period. In univariate cox proportional analysis, the scores of the BDI, D-12 and SGRQ Activity all could predict the events of AECOPD and hospital admission. But the scores of D-12 could not predict mortality, while those of the BDI and SGRQ Activity could.Conclusions: The BDI, D-12 and SGRQ Activity showed moderate, not strong correlations with each other in patients with COPD.FootnotesCite this article as: European Respiratory Journal 2020; 56: Suppl. 64, 996.This abstract was presented at the 2020 ERS International Congress, in session {\textquotedblleft}Respiratory viruses in the "pre COVID-19" era{\textquotedblright}.This is an ERS International Congress abstract. No full-text version is available. Further material to accompany this abstract may be available at www.ers-education.org (ERS member access only).}, issn = {0903-1936}, URL = {https://erj.ersjournals.com/content/56/suppl_64/996}, eprint = {https://erj.ersjournals.com/content}, journal = {European Respiratory Journal} }