Standard measurement error and minimal detectable change of the Back-PAQ ArgSpan questionnaire: Secondary analysis.

Autor: Villalba FJ; Universidad de Buenos Aires, Argentina. Electronic address: federicojosevillalba@gmail.com., Policastro PO; Universidad de Buenos Aires, Argentina; KINÉ- Kinesiología Deportiva y Funcional Sports Clinic, Buenos Aires City, Argentina; Physical Therapy Unit, Durand Hospital. Buenos Aires City, Argentina. Electronic address: https://twitter.com/policastrito., Soliño S; Universidad de Buenos Aires, Argentina; Physical Therapy Unit, Durand Hospital. Buenos Aires City, Argentina. Electronic address: https://twitter.com/sskinesio., Andreu M; Universidad Nacional de La Matanza, Argentina; Physical Therapy Unit, Santojanni Hospital, Buenos Aires City, Argentina. Electronic address: https://twitter.com/mauroandreu13., Novoa GA; Universidad de Buenos Aires, Argentina. Electronic address: https://twitter.com/gabriel_n89., Raguzzi IA; Universidad de Buenos Aires, Argentina; KINÉ- Kinesiología Deportiva y Funcional Sports Clinic, Buenos Aires City, Argentina. Electronic address: https://twitter.com/pikeraguzzi., Pierobon A; Universidad de Buenos Aires, Argentina; KINÉ- Kinesiología Deportiva y Funcional Sports Clinic, Buenos Aires City, Argentina; Physical Therapy Unit, Durand Hospital. Buenos Aires City, Argentina. Electronic address: https://twitter.com/andipierobon.
Jazyk: angličtina
Zdroj: Musculoskeletal science & practice [Musculoskelet Sci Pract] 2021 Feb; Vol. 51, pp. 102315. Date of Electronic Publication: 2020 Dec 17.
DOI: 10.1016/j.msksp.2020.102315
Abstrakt: Background: Negative attitudes and beliefs about back pain in patients with low back pain (LBP) are associated with high levels of pain and negatively influence clinical outcome. The Back Pain Attitudes Questionnaire (Back-PAQ) was developed to assess back beliefs of patients and healthcare professionals. The minimal detectable change (MDC) is defined as the smallest amount of change that can be detected not due to inherent variation or "noise" in the measure. The MDC values at 68%, 90% and 95% confidence levels of the Back-PAQ ArgSpan are unknown.
Objective: to calculate standard error measurement (SEM) and MDC to confirm the feasibility of Back-PAQ ArgSpan as a reliable outcome measure in clinical and research settings.
Study Design: a secondary analysis was carried out using a subgroup of data from the cross-cultural adaptation and validation of the Argentine version of the Back PAQ.
Method: SEM was calculated (SD × √1 - ICC) and MDC as (SEM × z-value × √2). MDC was calculated as percentage as well.
Results: the SEM was 5.16 points. The MDC 68 , MDC 90 and MDC 95 of the Back-PAQ were 7.30, 12 and 14.3 points, respectively. The percentages of MDC 68 , MDC 90 and MDC 95 of the Back-PAQ were 6.7%, 11.0% and 13.1%, respectively.
Conclusion: The present study demonstrated that the Back-PAQ ArgSpan is a reliable and interpretable measurement tool. When assessing a patient, a change in the score in the Back-PAQ ArgSpan over 15 points shows a true change at 95% confidence level.
(Copyright © 2020 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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