caa a22 4500 606210938 CHVBK 20210128101035.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s10926-014-9559-9 doi (NATIONALLICENCE)springer-10.1007/s10926-014-9559-9 Measurement Properties of the Spinal Function Sort in Patients with Sub-acute Whiplash-Associated Disorders [Elektronische Daten] [M. Trippolini, P. Dijkstra, J. Geertzen, M. Reneman] Purpose To extensively analyze the measurement properties the Spinal Function Sort (SFS) in patients with sub-acute whiplash-associated disorders (WAD). Methods Three-hundred-two patients with WAD were recruited from an outpatient work rehabilitation center. Internal consistency was assessed by Cronbach's α. Construct validity was tested based on eight a priori hypotheses. Structural validity was measured with principal component analysis (PCA). Test-retest reliability and agreement was evaluated in a sub sample (n=32) using intraclass correlation coefficient (ICC) and limits of agreement (LoA). The predictive validity of SFS for future work status at 1, 3, 6, and 12months follow-up was determined by area under the curve (AUC) of receiver operating characteristics. Non-return to work (N-RTW) was defined with two cut-off points: workcapacity <50 and <100%. Results N-RTW decreased from 50%, 1month follow-up, to 14%, 12months follow-up. Cronbach's α was 0.98, PCA revealed evidence for unidimensionality. ICC was 0.86, LoA was ±33 points. Seven out of eight hypotheses for construct validity were not rejected. AUC reduced with a longer follow-up from 0.71 for 1month to 0.61 at 12months, for cut-off point <50%. For cut-off point <100% these values were 0.71 and 0.59. Conclusion In patients with sub-acute WAD test-retest reliability, internal consistency, construct- and structural validity of the SFS were adequate. LoA were substantial. Sensitivity to accurately predict N-RTW was poor. The predictive validity of the SFS for N-RTW of patients with sub-acute WAD from an outpatient work rehabilitation setting was only sufficient for the short term (1month). The Author(s), 2014 Whiplash injuries nationallicence Neck pain nationallicence Physical function nationallicence Questionnaires nationallicence Disability evaluation nationallicence Work nationallicence SFS : Spinal Function Sort questionnaire nationallicence WAD : Whiplash-associated disorder nationallicence FCE : Functional capacity evaluation nationallicence WC : Work capacity nationallicence (N-)RTW : (Non-)return to work nationallicence DOT : Dictionary of Occupational Titles nationallicence Trippolini M. Department of Work Rehabilitation, Rehaklinik Bellikon, Suva Care, 5454, Bellikon, Switzerland aut Dijkstra P. Department of Rehabilitation Medicine, Center for Rehabilitation, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands aut Geertzen J. Department of Rehabilitation Medicine, Center for Rehabilitation, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands aut Reneman M. Department of Rehabilitation Medicine, Center for Rehabilitation, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands aut Journal of Occupational Rehabilitation Springer US; http://www.springer-ny.com 25/3(2015-09-01), 527-536 1053-0487 25:3<527 2015 25 10926 https://doi.org/10.1007/s10926-014-9559-9 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/s10926-014-9559-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Trippolini M. Department of Work Rehabilitation, Rehaklinik Bellikon, Suva Care, 5454, Bellikon, Switzerland aut NATIONALLICENCE 700 1- Dijkstra P. Department of Rehabilitation Medicine, Center for Rehabilitation, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands aut NATIONALLICENCE 700 1- Geertzen J. Department of Rehabilitation Medicine, Center for Rehabilitation, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands aut NATIONALLICENCE 700 1- Reneman M. Department of Rehabilitation Medicine, Center for Rehabilitation, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands aut NATIONALLICENCE 773 0- Journal of Occupational Rehabilitation Springer US; http://www.springer-ny.com 25/3(2015-09-01), 527-536 1053-0487 25:3<527 2015 25 10926