Judith Garcia-Aymerich, Milo A Puhan, Solange Corriol-Rohou, Corina de Jong, Heleen Demeyer, Fabienne Dobbels, Damijan Erzen, Anja Frei, Elena Gimeno-Santos, Nicholas S Hopkinson, Nathalie Ivanoff, Niklas Karlsson, Zafeiris Louvaris, Michael I Polkey, Roberto A Rabinovich, Mario Scuri, Maggie Tabberer, Ioannis Vogiatzis, Thierry Troosters
BACKGROUND: The Daily-PROactive and Clinical visit-PROactive Physical Activity (D-PPAC and C-PPAC) instruments in chronic obstructive pulmonary disease (COPD) combines questionnaire with activity monitor data to measure patients' experience of physical activity. Their amount, difficulty and total scores range from 0 (worst) to 100 (best) but require further psychometric evaluation. OBJECTIVE: To test reliability, validity and responsiveness, and to define minimal important difference (MID), of the D-PPAC and C-PPAC instruments, in a large population of patients with stable COPD from diverse severities, settings and countries...
January 21, 2021: Thorax