Swipe om te navigeren naar een ander artikel
To develop a psychometrically appropriate brief symptoms measure of carpal tunnel syndrome (CTS).
Preoperative CTS 11-item symptom severity and 8-item functional status scales from 693 patients (71% women) with CTS were subjected to exploratory factor analysis and item response theory (IRT) analysis yielding a revised CTS symptoms scale. A validation sample of 213 patients (68% women) with CTS completed the 11-item disabilities of the arm, shoulder and hand (QuickDASH), and the revised symptoms scale and 116 patients also completed the original CTS symptom severity scale (median interval 11 days).
Of the 11 CTS symptom severity scale items, 2 items that on factor analysis associated with the functional status items were removed. After IRT recalibrations of the remaining symptom severity scale items, 2 non-fitting items were removed and 2 items were merged creating the 6-item CTS symptoms scale. Factor analysis showed one dominant factor explaining 58% of the variance. Reliability was high (Cronbach alpha = 0.86; IRT person separation reliability = 0.88). No item displayed significant differential item functioning. The 6-item CTS symptoms scale showed strong correlation with the QuickDASH (r = 0.70) and agreement with the original symptom severity scale (ICC = 0.80).
The 6-item CTS symptoms scale has good reliability and validity and can be used to measure symptom severity and treatment outcome in CTS.
Log in om toegang te krijgen
Met onderstaand(e) abonnement(en) heeft u direct toegang:
Levine, D. W., Simmons, B. P., Koris, M. J., Daltroy, L. H., Hohl, G. G., Fossel, A. H., et al. (1993). A self-administered questionnaire for the assessment of severity of symptoms and functional status in carpal tunnel syndrome. The Journal of Bone and Joint Surgery. American Volume, 75, 1585–1592. PubMed
Mondelli, M., Reale, F., Sicurelli, F., & Padua, L. (2000). Relationship between the self-administered Boston questionnaire and electrophysiological findings in follow-up of surgically-treated carpal tunnel syndrome. Journal of Hand Surgery (Edinburgh, Lothian), 25, 128–134. doi: 10.1054/jhsb.2000.0361.
Rosales, R. S., Delgado, E. B., & Diez de la Lastra-Bosch, I. (2002). Evaluation of the Spanish version of the DASH and carpal tunnel syndrome health-related quality-of-life instruments: cross-cultural adaptation process and reliability. The Journal of Hand Surgery, 27, 334–343. doi: 10.1053/jhsu.2002.30059. PubMedCrossRef
de Campos, C. C., Manzano, G. M., Leopoldino, J. F., Nobrega, J. A., Sanudo, A., de Araujo, P. C., et al. (2004). The relationship between symptoms and electrophysiological detected compression of the median nerve at the wrist. Acta Neurologica Scandinavica, 110, 398–402. doi: 10.1111/j.1600-0404.2004.00332.x. PubMedCrossRef
Hambleton, R. K., Swaminathan, H., & Rogers, H. J. (1991). Fundamentals of item response theory. Newbury Park, CA: Sage Publications.
Wilson, M. (2005). Constructing measures: An item response modeling approach. Mahwah, NJ: Lawrence Erlbaum Associates.
Lorenzo-Seva, U., & Ferrando, P. J. (2006). FACTOR: A computer program to fit the exploratory factor analysis model. Behavior Research Methods, 38, 88–91. PubMed
Finney, S. J., & DiStefano, C. (2006). Non-normal and categorical data in structural equation modeling. In G. R. Hancock & R. O. Mueller (Eds.), Structural equation modeling: A second course (pp. 269–314). Greenwich, CT: Information Age Publishing.
Muthén, B., & Kaplan, D. (1985). A comparison of some methodologies for the factor analysis of non-normal Likert variables. The British Journal of Mathematical and Statistical Psychology, 38, 171–189.
Olsson, U. H., Foss, T., Troye, S. V., & Howell, R. D. (2000). The performance of ML, GLS, and WLS estimation in structural equation modeling under conditions of misspecification and nonnormality. Structural Equation Modeling: A Multidisciplinary Journal, 7, 557–595. CrossRef
Thompson, B. (2004). Exploratory and confirmatory factor analysis: Understanding concepts and applications. Washington, DC: American Psychological Association. CrossRef
Hambleton, R. K. (2005). Applications of item response theory to improve health outcomes assessment: Developing item banks, linking instruments, and computer-adaptive testing. In J. Lipscomb, C. C. Gotay, & C. Snyder (Eds.), Outcomes assessment in cancer (pp. 445–464). Cambridge: Cambridge University Press.
Rasch, G. (1960). Probabilistic models for some intelligence and attainment tests. Copenhagen: Danish Institute for Educational Research. (Reprinted by University of Chicago Press, 1980).
Wu, M. L., Adams, R. J., & Wilson, M. (2007). ConQuest: Generalized Item Response Modeling Software. Hawthorn, Australia: Australian Council for Educational Research (ACER).
Wright, B. D., & Masters, G. N. (1982). Rating scale analysis. Chicago: MESA Press.
Shepard, L. A. (1985). Identifying bias in test items. In B. F. Green (Ed.), New directions in testing and measurement: Issues in testing–Coaching, disclosure, and test bias (pp. 79–104). San Francisco: Jossey-Bass.
Spies-Dorgelo, M. N., Terwee, C. B., Stalman, W. A., & van der Windt, D. A. (2006). Reproducibility and responsiveness of the symptom severity scale and the hand and finger function subscale of the Dutch arthritis impact measurement scales (Dutch-AIMS2-HFF) in primary care patients with wrist or hand problems. Health and Quality of Life Outcomes, 4, 87. doi: 10.1186/1477-7525-4-87. PubMedCrossRef
Atroshi, I., Larsson, G. U., Ornstein, E., Hofer, M., Johnsson, R., & Ranstam, J. (2006). Outcomes of endoscopic surgery compared with open surgery for carpal tunnel syndrome among employed patients: Randomised controlled trial. British Medical Journal, 332, 1473–1476. doi: 10.1136/bmj.38863.632789.1F. PubMedCrossRef
Ware, J. E., Snow, K. K., Kosinski, M., & Gandek, B. (1993). SF-36 health survey manual and interpretation guide. Boston: New England Medical Center.
Katz, J. N., Keller, R. B., Simmons, B. P., Rogers, W. D., Bessette, L., Fossel, A. H., et al. (1998). Maine carpal tunnel study: Outcomes of operative and nonoperative therapy for carpal tunnel syndrome in a community-based cohort. The Journal of Hand Surgery, 23, 697–710. doi: 10.1016/S0363-5023(98)80058-0. PubMedCrossRef
Atroshi, I., Gummesson, C., McCabe, S. J., & Ornstein, E. (2007). The SF-6D health utility index in carpal tunnel syndrome. Journal of Hand Surgery (Edinburgh, Lothian), 32, 198–202. doi: 10.1016/j.jhsb.2006.11.002.
- The 6-item CTS symptoms scale: a brief outcomes measure for carpal tunnel syndrome
- Springer Netherlands