Julie M Fritz1, Faris Alodaibi2, Alyssa M Bamer3, Dagmar Amtmann4. 1. Distinguished Professor, Department of Physical Therapy and Athletic Training, University of Utah, Salt Lake City, Utah, USA. julie.fritz@utah.edu. 2. Assistant Professor, Rehabilitation Science Department, King Saud University, Riyadh, Saudi Arabia. 3. Research Scientist, Department of Rehabilitation Medicine, University of Washington, Seattle, WA, USA. 4. Research Professor, Department of Rehabilitation Medicine, University of Washington, Seattle, WA, USA.
Abstract
PURPOSE: This study examined the psychometric properties of custom short forms assessing pain-related self-efficacy and catastrophizing, which are important psychosocial constructs for individuals with pain conditions. Short forms were derived from the University of Washington concerns about pain (UWCAP) and pain-related self-efficacy (UWPRSE) item banks. METHODS: Participants with low back pain (LBP) in a clinical trial (n = 241) examining nonpharmacologic treatments completed the 8-item UWCAP and 9-item UWPRSE and a numeric pain intensity rating, Oswestry Disability and Fear-Avoidance Beliefs questionnaires at baseline, 1-, 4- and 12-weeks after enrollment. Cronbach's alpha and intraclass correlation coefficients estimated internal consistency and test-retest reliability, respectively. Floor and ceiling effects for the UWCAP and UWPRSE were examined. Concurrent validity was evaluated with univariate correlation coefficients and predictive validity with multivariate regression models. Participants were divided into categories of treatment responsiveness based on a single-item global rating measure, and UWPRSE and UWCAP change scores and standardized effect sizes were calculated in each category. RESULTS: Both short forms had good internal consistency (α = 0.89-0.90) and test-retest reliability (ICC = 0.77-0.85), without substantial floor or ceiling effects. As expected, the UWCAP was positively correlated, and UWPRSE negatively correlated, with concurrent measures of pain intensity, disability and fear-avoidance beliefs. The UWCAP added to the prediction model for 4-week disability outcomes (β = 0.25, p = 0.008). Responsiveness was supported by the mean change scores and effect sizes across treatment response categories. CONCLUSION: The UWCAP and UWPRSE short forms demonstrated acceptable psychometric properties, supporting future research on the role of these constructs in the management of persons with LBP. TRIAL REGISTRATION: Clinicaltrials.gov ID: NCT02860834. Registered on August 16, 2016.
PURPOSE: This study examined the psychometric properties of custom short forms assessing pain-related self-efficacy and catastrophizing, which are important psychosocial constructs for individuals with pain conditions. Short forms were derived from the University of Washington concerns about pain (UWCAP) and pain-related self-efficacy (UWPRSE) item banks. METHODS: Participants with low back pain (LBP) in a clinical trial (n = 241) examining nonpharmacologic treatments completed the 8-item UWCAP and 9-item UWPRSE and a numeric pain intensity rating, Oswestry Disability and Fear-Avoidance Beliefs questionnaires at baseline, 1-, 4- and 12-weeks after enrollment. Cronbach's alpha and intraclass correlation coefficients estimated internal consistency and test-retest reliability, respectively. Floor and ceiling effects for the UWCAP and UWPRSE were examined. Concurrent validity was evaluated with univariate correlation coefficients and predictive validity with multivariate regression models. Participants were divided into categories of treatment responsiveness based on a single-item global rating measure, and UWPRSE and UWCAP change scores and standardized effect sizes were calculated in each category. RESULTS: Both short forms had good internal consistency (α = 0.89-0.90) and test-retest reliability (ICC = 0.77-0.85), without substantial floor or ceiling effects. As expected, the UWCAP was positively correlated, and UWPRSE negatively correlated, with concurrent measures of pain intensity, disability and fear-avoidance beliefs. The UWCAP added to the prediction model for 4-week disability outcomes (β = 0.25, p = 0.008). Responsiveness was supported by the mean change scores and effect sizes across treatment response categories. CONCLUSION: The UWCAP and UWPRSE short forms demonstrated acceptable psychometric properties, supporting future research on the role of these constructs in the management of persons with LBP. TRIAL REGISTRATION: Clinicaltrials.gov ID: NCT02860834. Registered on August 16, 2016.
Authors: Christopher J L Murray; Ryan M Barber; Kyle J Foreman; Ayse Abbasoglu Ozgoren; Foad Abd-Allah; Semaw F Abera; Victor Aboyans; Jerry P Abraham; Ibrahim Abubakar; Laith J Abu-Raddad; Niveen M Abu-Rmeileh; Tom Achoki; Ilana N Ackerman; Zanfina Ademi; Arsène K Adou; José C Adsuar; Ashkan Afshin; Emilie E Agardh; Sayed Saidul Alam; Deena Alasfoor; Mohammed I Albittar; Miguel A Alegretti; Zewdie A Alemu; Rafael Alfonso-Cristancho; Samia Alhabib; Raghib Ali; François Alla; Peter Allebeck; Mohammad A Almazroa; Ubai Alsharif; Elena Alvarez; Nelson Alvis-Guzman; Azmeraw T Amare; Emmanuel A Ameh; Heresh Amini; Walid Ammar; H Ross Anderson; Benjamin O Anderson; Carl Abelardo T Antonio; Palwasha Anwari; Johan Arnlöv; Valentina S Arsic Arsenijevic; Al Artaman; Rana J Asghar; Reza Assadi; Lydia S Atkins; Marco A Avila; Baffour Awuah; Victoria F Bachman; Alaa Badawi; Maria C Bahit; Kalpana Balakrishnan; Amitava Banerjee; Suzanne L Barker-Collo; Simon Barquera; Lars Barregard; Lope H Barrero; Arindam Basu; Sanjay Basu; Mohammed O Basulaiman; Justin Beardsley; Neeraj Bedi; Ettore Beghi; Tolesa Bekele; Michelle L Bell; Corina Benjet; Derrick A Bennett; Isabela M Bensenor; Habib Benzian; Eduardo Bernabé; Amelia Bertozzi-Villa; Tariku J Beyene; Neeraj Bhala; Ashish Bhalla; Zulfiqar A Bhutta; Kelly Bienhoff; Boris Bikbov; Stan Biryukov; Jed D Blore; Christopher D Blosser; Fiona M Blyth; Megan A Bohensky; Ian W Bolliger; Berrak Bora Başara; Natan M Bornstein; Dipan Bose; Soufiane Boufous; Rupert R A Bourne; Lindsay N Boyers; Michael Brainin; Carol E Brayne; Alexandra Brazinova; Nicholas J K Breitborde; Hermann Brenner; Adam D Briggs; Peter M Brooks; Jonathan C Brown; Traolach S Brugha; Rachelle Buchbinder; Geoffrey C Buckle; Christine M Budke; Anne Bulchis; Andrew G Bulloch; Ismael R Campos-Nonato; Hélène Carabin; Jonathan R Carapetis; Rosario Cárdenas; David O Carpenter; Valeria Caso; Carlos A Castañeda-Orjuela; Ruben E Castro; Ferrán Catalá-López; Fiorella Cavalleri; Alanur Çavlin; 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