Validity and responsiveness of the Daily-and Clinical visit-PROactive Physical Activity in COPD (D-PPAC and C-PPAC) instruments

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

Producció científica: Article en revista indexadaArticleAvaluat per experts

25 Cites (Scopus)

Resum

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. Methods We used data from seven randomised controlled trials to evaluate D-PPAC and C-PPAC internal consistency and construct validity by sex, age groups, COPD severity, country and language as well as responsiveness to interventions, ability to detect change and MID. Results We included 1324 patients (mean (SD) age 66 (8) years, forced expiratory volume in 1 s 55 (17)% predicted). Scores covered almost the full range from 0 to 100, showed strong internal consistency after stratification and correlated as a priori hypothesised with dyspnoea, health-related quality of life and exercise capacity. Difficulty scores improved after pharmacological treatment and pulmonary rehabilitation, while amount scores improved after behavioural physical activity interventions. All scores were responsive to changes in self-reported physical activity experience (both worsening and improvement) and to the occurrence of COPD exacerbations during follow-up. The MID was estimated to 6 for amount and difficulty scores and 4 for total score. Conclusions The D-PPAC and C-PPAC instruments are reliable and valid across diverse COPD populations and responsive to pharmacological and non-pharmacological interventions and changes in clinically relevant variables.

Idioma originalAnglès
Pàgines (de-a)228-238
Nombre de pàgines11
RevistaThorax
Volum76
Número3
DOIs
Estat de la publicacióPublicada - 1 de març 2021
Publicat externament

Fingerprint

Navegar pels temes de recerca de 'Validity and responsiveness of the Daily-and Clinical visit-PROactive Physical Activity in COPD (D-PPAC and C-PPAC) instruments'. Junts formen un fingerprint únic.

Com citar-ho