Validation of the Spanish Activity Questionnaire in COPD (SAQ-COPD) in Patients with Chronic Obstructive Pulmonary Disease.

Content Provider	Europe PMC
Author	Soler-Cataluña, Juan José Puente Maestu, Luis Román Rodríguez, Miguel Esteban, Cristóbal Gea, Joaquín Bernabeu Mora, Roberto Pleguezuelos Cobo, Eulogio Ancochea, Julio García-Río, Francisco
Copyright Year	2022
Abstract	PurposeThe Spanish Activity Questionnaire in COPD (SAQ-COPD) is a short, simple physical activity (PA) measurement instrument for patients with chronic obstructive pulmonary disease (COPD). In this study, we analyzed its validity and sensitivity to change.MethodsProspective scale validation study. An accelerometer (DynaPort MoveMonitor®) and the Yale Physical Activity Survey (YPAS) were used as reference standards. The analyses examined the criterion validity (Spearman correlations), internal consistency (Cronbach’s alpha), factorial structure, test-retest reliability (intraclass correlation coefficient, ICC), sensitivity to change and receiver operating characteristic (ROC) curve to classify patients with low PA.ResultsA total of 300 patients diagnosed with COPD were analyzed (73% males, mean age 66 ± 8 years, 40.3% with severe airflow limitation). Cronbach’s alpha was 0.60 and Spearman's correlations with accelerometer measurements of PA [number of steps, metabolic equivalents (MET), physical activity level (PAL)] and YPAS ranged from 0.37 to 0.53 (all p < 0.001). ICC was 0.69 (95% CI 0.61–0.74) and the area under the ROC curve to identify low PA was 0.65 (95% confidence interval: 0.58–0.73). Significant variations in SAQ-COPD scores were found between groups defined by YPAS for change.ConclusionThe SAQ-COPD questionnaire is a valid instrument for classifying PA in patients with COPD. Correlations with other instruments provide criterion validity and also demonstrate good sensitivity to change.
Page Count	12
ISSN	11769106
Volume Number	17
PubMed Central reference number	PMC9645109
PubMed reference number	36381995
Journal	International Journal of Chronic Obstructive Pulmonary Disease [Int J Chron Obstruct Pulmon Dis]
e-ISSN	11782005
DOI	10.2147/COPD.S381427
Language	English
Publisher	Dove
Publisher Date	2022-11-05
Access Restriction	Open
Rights License	This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License (http://creativecommons.org/licenses/by-nc/3.0/). By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms (https://www.dovepress.com/terms.php). © 2022 Soler-Cataluña et al.
Subject Keyword	physical activity chronic obstructive pulmonary disease SAQ-COPD validity reliability
Content Type	Text
Resource Type	Article
Subject	Pulmonary and Respiratory Medicine Public Health, Environmental and Occupational Health Health Policy