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Analysis of institutional authors

Ancochea, JulioAuthorGarcia-Rio, FranciscoCorresponding Author

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November 26, 2024
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Validation of the Spanish Activity Questionnaire in COPD (SAQ-COPD) in Patients with Chronic Obstructive Pulmonary Disease

Publicated to:International Journal of Chronic Obstructive Pulmonary Disease. 17 2835-2846 - 2022-01-01 17(), DOI: 10.2147/COPD.S381427

Authors: Jose Soler-Cataluna, Juan; Puente Maestu, Luis; Roman Rodriguez, Miguel; Esteban, Cristobal; Gea, Joaquin; Bernabeu Mora, Roberto; Pleguezuelos Cobo, Eulogio; Ancochea, Julio; Garcia-Rio, Francisco

Affiliations

Ctr Salud Son Pisa, Palma De Mallorca, Spain - Author
Hosp Arnau Vilanova, Valencia, Spain - Author
Hosp del Mar, Barcelona, Spain - Author
Hosp Galdakao, Bilbao, Vizcaya, Spain - Author
Hosp Gen Univ Morales Meseguer, Murcia, Spain - Author
Hosp Gregorio Maranon, Madrid, Spain - Author
Hosp La Paz IdiPaz, Madrid, Spain - Author
Hosp La Princesa, Madrid, Spain - Author
Hosp Mataro, Mataro, Barcelona, Spain - Author
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Abstract

Purpose: The 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.Methods: Prospective scale validation study. An accelerometer (DynaPort MoveMonitor (R)) 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.Results: A 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.Conclusion: The 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.

Keywords

Chronic obstructive pulmonary diseaseDaily physical-activityDaily-lifeHealthInactivityInstrumentsMortalitOlder-adultsPhysical activityReliabilitReliabilitySaq-copdSedentary behaviorValidity

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal International Journal of Chronic Obstructive Pulmonary Disease due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2022, it was in position , thus managing to position itself as a Q1 (Primer Cuartil), in the category Medicine (Miscellaneous).

From a relative perspective, and based on the normalized impact indicator calculated from the Field Citation Ratio (FCR) of the Dimensions source, it yields a value of: 2.02, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: Dimensions Jul 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-07-16, the following number of citations:

  • WoS: 1
  • Scopus: 2

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-07-16:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 19.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 20 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 11.85.
  • The number of mentions on the social network Facebook: 1 (Altmetric).
  • The number of mentions on the social network X (formerly Twitter): 10 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.

Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: Last Author (GARCIA RIO, FRANCISCO).

the author responsible for correspondence tasks has been GARCIA RIO, FRANCISCO.