STUDY DESIGN: Clinical measurement, longitudinal; multicenter prospective cohort study. OBJECTIVES: To examine the validity, reliability, and responsiveness of the Patient-Specific Functional Scale (PSFS) in patients with musculoskeletal upper extremity problems being treated in physical therapy. BACKGROUND: The clinimetric properties of the PSFS have not been established nor compared with region-specific outcome measures in patients with upper extremity problems. METHODS: Patients completed the PSFS, Upper Extremity Functional Index (UEFI), and numeric pain rating scale (NPRS) at baseline and follow-up, and were categorized as improved, stable, or worsened, using the global rating of change. Construct validity was assessed by comparing the change scores of the stable and improved groups, using independent-samples t tests. Reliability was evaluated using intraclass correlation coefficient (ICC2,1) with 95% confidence intervals. Bland-Altman plots determined limits of agreement. Responsiveness and minimal important difference (MID) were determined with receiver operator characteristic (ROC) curves. RESULTS: One hundred eighty patients met the inclusion criteria. Construct validity was supported for the PSFS and the UEFI (P<.001). Reliability was moderate to good for the PSFS (ICC2,1 = 0.713) and UEFI (ICC2,1 = 0.848). Reported estimates of reliability may be lower than true values because the group of "stable" patients from this cohort had, on average, a small positive change. Bland-Altman plots indicated good agreement. The area under the ROC curve (AUC) was significantly different from the null value of 0.5 for the PSFS (0.887) and the UEFI (0.877), indicating good accuracy in distinguishing improved patients from stable patients. MID was 1.2 for the PSFS (scale, 0-10) and 8.5 for the UEFI (scale, 0-80). CONCLUSION: The PSFS is a valid, reliable, and responsive outcome measure for patients with upper extremity problems.
STUDY DESIGN: Clinical measurement, longitudinal; multicenter prospective cohort study. OBJECTIVES: To examine the validity, reliability, and responsiveness of the Patient-Specific Functional Scale (PSFS) in patients with musculoskeletal upper extremity problems being treated in physical therapy. BACKGROUND: The clinimetric properties of the PSFS have not been established nor compared with region-specific outcome measures in patients with upper extremity problems. METHODS:Patients completed the PSFS, Upper Extremity Functional Index (UEFI), and numeric pain rating scale (NPRS) at baseline and follow-up, and were categorized as improved, stable, or worsened, using the global rating of change. Construct validity was assessed by comparing the change scores of the stable and improved groups, using independent-samples t tests. Reliability was evaluated using intraclass correlation coefficient (ICC2,1) with 95% confidence intervals. Bland-Altman plots determined limits of agreement. Responsiveness and minimal important difference (MID) were determined with receiver operator characteristic (ROC) curves. RESULTS: One hundred eighty patients met the inclusion criteria. Construct validity was supported for the PSFS and the UEFI (P<.001). Reliability was moderate to good for the PSFS (ICC2,1 = 0.713) and UEFI (ICC2,1 = 0.848). Reported estimates of reliability may be lower than true values because the group of "stable" patients from this cohort had, on average, a small positive change. Bland-Altman plots indicated good agreement. The area under the ROC curve (AUC) was significantly different from the null value of 0.5 for the PSFS (0.887) and the UEFI (0.877), indicating good accuracy in distinguishing improved patients from stable patients. MID was 1.2 for the PSFS (scale, 0-10) and 8.5 for the UEFI (scale, 0-80). CONCLUSION: The PSFS is a valid, reliable, and responsive outcome measure for patients with upper extremity problems.
Authors: David Cruz-Díaz; Fidel Hita-Contreras; Rafael Lomas-Vega; M C Osuna-Pérez; Antonio Martínez-Amat Journal: Clin Rheumatol Date: 2012-10-09 Impact factor: 2.980
Authors: Bert M Chesworth; Clayon B Hamilton; David M Walton; Melissa Benoit; Tracy A Blake; Heather Bredy; Cameron Burns; Lianne Chan; Elizabeth Frey; Graham Gillies; Teresa Gravelle; Rick Ho; Robert Holmes; Roland L J Lavallée; Melanie MacKinnon; Alishah Jamal Merchant; Tammy Sherman; Kelly Spears; Darryl Yardley Journal: Physiother Can Date: 2014 Impact factor: 1.037
Authors: Eric J Lavonas; Randy I Burnham; John Schwarz; Eugenia Quackenbush; Brandon Lewis; S Rutherfoord Rose; Spencer Greene; Eric A Toschlog; Nathan P Charlton; Michael E Mullins; Richard Schwartz; David Denning; Kapil Sharma; Kurt Kleinschmidt; Sean P Bush; Victoria E Anderson; Adit A Ginde; Charles J Gerardo Journal: J Med Toxicol Date: 2019-09-03