caa a22 4500 606179291 CHVBK 20210128100800.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s11136-015-0983-x doi (NATIONALLICENCE)springer-10.1007/s11136-015-0983-x Does the COPD assessment test (CATTM) questionnaire produce similar results when self- or interviewer administered? [Elektronische Daten] [A. Agusti, J. Soler-Cataluña, J. Molina, E. Morejon, M. Garcia-Losa, M. Roset, X. Badia] Purpose: The COPD assessment test (CAT) is a questionnaire that assesses the impact of chronic obstructive pulmonary disease (COPD) on health status, but some patients have difficulties filling it up by themselves. We examined whether the mode of administration of the Spanish version of CAT (self vs. interviewer) influences its scores and/or psychometric properties. Methods: Observational, prospective study in 49 Spanish centers that includes clinically stable COPD patients (n=153) and patients hospitalized because of an exacerbation (ECOPD; n=224). The CAT was self-administered (CAT-SA) or administered by an interviewer (CAT-IA) based on the investigator judgment of the patient's capacity. To assess convergent validity, the Saint George's Respiratory Disease Questionnaire (SGRQ) and the London Chest Activity of Daily Living (LCADL) instrument were also administered. Psychometric properties were compared across modes of administration. Results: A total of 118 patients (31%) completed the CAT-SA and 259 (69%) CAT-IA. Multiple regression analysis showed that mode of administration did not affect CAT scores. The CAT showed excellent psychometric properties in both modes of administration. Internal consistency coefficients (Cronbach's alpha) were high (0.86 for CAT-SA and 0.85 for CAT-IA) as was test-retest reliability (intraclass correlation coefficients of 0.83 for CAT-SA and CAT-IA). Correlations with SGRQ and LCADL were moderate to strong both in CAT-SA and CAT-IA, indicating good convergent validity. Similar results were observed when testing longitudinal validity. Conclusions: The mode of administration does not influence CAT scores or its psychometric properties. Hence, both modes of administration can be used in clinical practice depending on the physician judgment of patient's capacity. Springer International Publishing Switzerland, 2015 COPD nationallicence Quality of life nationallicence Questionnaire nationallicence CAT nationallicence Mode of administration nationallicence Agusti A. Thorax Institute, Hospital Clinic, IDIBAPS, University of Barcelona, Barcelona, Spain aut Soler-Cataluña J. Hospital de Requena, Requena, Valencia, Spain aut Molina J. Centro de salud Francia, Fuenlabrada, Madrid, Spain aut Morejon E. GlaxoSmithKline, Tres Cantos, Madrid, Spain aut Garcia-Losa M. GlaxoSmithKline, Tres Cantos, Madrid, Spain aut Roset M. IMS Health, C/Dr. Ferran 25-27, 08034, Barcelona, Spain aut Badia X. IMS Health, C/Dr. Ferran 25-27, 08034, Barcelona, Spain aut Quality of Life Research Springer International Publishing 24/10(2015-10-01), 2345-2354 0962-9343 24:10<2345 2015 24 11136 https://doi.org/10.1007/s11136-015-0983-x text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11136-015-0983-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Agusti A. Thorax Institute, Hospital Clinic, IDIBAPS, University of Barcelona, Barcelona, Spain aut NATIONALLICENCE 700 1- Soler-Cataluña J. Hospital de Requena, Requena, Valencia, Spain aut NATIONALLICENCE 700 1- Molina J. Centro de salud Francia, Fuenlabrada, Madrid, Spain aut NATIONALLICENCE 700 1- Morejon E. GlaxoSmithKline, Tres Cantos, Madrid, Spain aut NATIONALLICENCE 700 1- Garcia-Losa M. GlaxoSmithKline, Tres Cantos, Madrid, Spain aut NATIONALLICENCE 700 1- Roset M. IMS Health, C/Dr. Ferran 25-27, 08034, Barcelona, Spain aut NATIONALLICENCE 700 1- Badia X. IMS Health, C/Dr. Ferran 25-27, 08034, Barcelona, Spain aut NATIONALLICENCE 773 0- Quality of Life Research Springer International Publishing 24/10(2015-10-01), 2345-2354 0962-9343 24:10<2345 2015 24 11136