Translation and validation of the Dutch version of the Effective Consumer Scale (EC-17)
The Effective Consumer Scale (EC-17) measures the skills of musculoskeletal patients in managing their own healthcare. The objectives of this study were to translate the EC-17 into Dutch and to further evaluate its psychometric properties.
The EC-17 was translated and cognitively pretested following cross-cultural adaptation guidelines. Two hundred and thirty-eight outpatients (52 % response rate) with osteoarthritis or fibromyalgia completed the EC-17 along with other validated measures. Three weeks later, 101 patients completed the EC-17 again.
Confirmatory factor analysis supported the unidimensional structure of the scale. The items adequately fit the Rasch model and only one item demonstrated differential item functioning. Person reliability was high (0.92), but item difficulty levels tended to cluster around the middle of the scale, and measurement precision was highest for moderate and lower levels of skills. The scale demonstrated adequate test–retest reliability (ICC = 0.71), and correlations with other measures were largely as expected.
The results supported the validity and reliability of the Dutch version of the EC-17, but suggest that the scale is best targeted at patients with relatively low levels of skills. Future studies should further examine its sensitivity to change in a clinical trial specifically aimed at improving effective consumer skills.
- Barlow, J., Wright, C., Sheasby, J., Turner, A., & Hainsworth, J. (2002). Self-management approaches for people with chronic conditions: A review. Patient Education and Counseling, 48(2), 177–187. CrossRef
- Mulligan, K., Newman, S. P., Taal, E., Hazes, M., & Rasker, J. J. (2005). The design and evaluation of psychoeducational/self-management interventions. Journal of Rheumatology, 32(12), 2470–2474.
- Newman, S., Steed, L., & Mulligan, K. (2004). Self-management interventions for chronic illness. Lancet, 364(9444), 1523–1537. CrossRef
- Tugwell, P. S., Wilson, A. J., Brooks, P. M., Driedger, S. M., Gallois, C., O’Connor, A. M., et al. (2005). Attributes and skills of an effective musculoskeletal consumer. Journal of Rheumatology, 32(11), 2257–2261.
- Kristjansson, E., Tugwell, P. S., Wilson, A. J., Brooks, P. M., Driedger, S. M., Gallois, C., et al. (2007). Development of the effective musculoskeletal consumer scale. Journal of Rheumatology, 34(6), 1392–1400.
- Santesso, N., Rader, T., Wells, G. A., O’Connor, A. M., Brooks, P. M., Driedger, M., et al. (2009). Responsiveness of the Effective Consumer Scale (EC-17). Journal of Rheumatology, 36(9), 2087–2091. CrossRef
- Osborne, R. H., Elsworth, G. R., & Whitfield, K. (2007). The health education impact questionnaire (heiQ): An outcomes and evaluation measure for patient education and self-management interventions for people with chronic conditions. Patient Education and Counseling, 66(2), 192–201. CrossRef
- Hibbard, J. H., Mahoney, E. R., Stockard, J., & Tusler, M. (2005). Development and testing of a short form of the patient activation measure. Health Services Research, 40(6 Pt 1), 1918–1930. CrossRef
- Lorig, K., Chastain, R. L., Ung, E., Shoor, S., & Holman, H. R. (1989). Development and evaluation of a scale to measure perceived self-efficacy in people with arthritis. Arthritis and Rheumatism, 32(1), 37–44. CrossRef
- Hamnes, B., Garratt, A., Kjeken, I., Kristjansson, E., & Hagen, K. B. (2010). Translation, data quality, reliability, validity and responsiveness of the Norwegian version of the Effective Musculoskeletal Consumer Scale (EC-17). BMC Musculoskeletal Disorders, 11(1), 21. CrossRef
- Beaton, D. E. (2000). Understanding the relevance of measured change through studies of responsiveness. Spine, 25(24), 3192–3199. CrossRef
- Hak, T., van der Veer, K., & Jansen, H. (2008). The three-step test-interview (TSTI): An observation-based method for pretesting self-completion questionnaires. Survey Research Methods, 2(3), 143–150.
- Maly, R. C., Frank, J. C., Marshall, G. N., DiMatteo, M. R., & Reuben, D. B. (1998). Perceived efficacy in patient-physician interactions (PEPPI): Validation of an instrument in older persons. Journal of the American Geriatrics Society, 46(7), 889–894.
- ten Klooster, P. M., Oostveen, J. C. M., Zandbelt, L. C., Taal, E., Drossaert, C. H. C., Harmsen, E. J., et al. (2011). Further validation of the 5-item Perceived Efficacy in Patient-Physician Interactions (PEPPI-5) scale in patients with osteoarthritis. Patient Education and Counseling. doi:10.1016/j.pec.2011.07.017
- Bosscher, R. J., & Smit, J. H. (1998). Confirmatory factor analysis of the general self-efficacy scale. Behaviour Research and Therapy, 36(3), 339–343. CrossRef
- Sherer, M., Maddox, J. E., Mercandante, B., Prentice-Dunn, S., Jacobs, B., & Robers, R. W. (1982). The self-efficacy scale: Construction and validation. Psychological Reports, 51(2), 663–671. CrossRef
- Meenan, R. F., Mason, J. H., Anderson, J. J., Guccione, A. A., & Kazis, L. E. (1992). AIMS2. The content and properties of a revised and expanded arthritis impact measurement scales health status questionnaire. Arthritis and Rheumatism, 35(1), 1–10. CrossRef
- Riemsma, R. P., Taal, E., Rasker, J. J., Houtman, P. M., van Paassen, H. C., & Wiegman, O. (1996). Evaluation of a Dutch version of the AIMS2 for patients with rheumatoid arthritis. British Journal of Rheumatology, 35(8), 755–760. CrossRef
- Aaronson, N. K., Muller, M., Cohen, P. D., Essink-Bot, M. L., Fekkes, M., Sanderman, R., et al. (1998). Translation, validation, and norming of the Dutch language version of the SF-36 health survey in community and chronic disease populations. Journal of Clinical Epidemiology, 51(11), 1055–1068. CrossRef
- Ware, J. E, Jr, & Sherbourne, C. D. (1992). The MOS 36-item short-form health survey (SF-36). I. Conceptual framework and item selection. Medical Care, 30(6), 473–483. CrossRef
- Ware, J. E., Kosinski, M., & Dewey, J. E. (2000). How to score version 2 of the SF-36 health survey. Lincoln, RI: QualityMetric Incorporated.
- Jöreskog, K. G., Sörbom, D., Du Toit, S., & Du Toit, M. (2001). LISREL 8: New statistical features. Lincolnwood, IL: Scientific Software International.
- Browne, M. W., & Cudeck, R. (1993). Alternative ways of assessing model fit. In K. A. Bollen & J. S. Long (Eds.), Testing structural equation models (pp. 136–162). Newbury Park CA: Sage Publications.
- Hu, L. T., & Bentler, P. M. (1999). Cutoff criteria for fit indexes in covariance structure analysis: Conventional criteria versus new alternatives. Structural Equation Modeling, 6(1), 1–55. CrossRef
- Linacre, J. M. (2006). A user’s guide to WINSTEPS MINISTEP Rasch-model computer programs. Chicago IL: Winsteps.com.
- Smith, R. M., Schumacker, R. E., & Bush, M. J. (1998). Using item mean squares to evaluate fit to the Rasch model. Journal of Outcome Measurement, 2(1), 66–78.
- Davidson, M. (2009). Rasch analysis of 24-, 18- and 11-item versions of the Roland-Morris disability questionnaire. Quality of Life Research, 18(4), 473–481. CrossRef
- Tennant, A., & Conaghan, P. G. (2007). The Rasch measurement model in rheumatology: What is it and why use it? When should it be applied, and what should one look for in a Rasch paper? Arthritis and Rheumatism, 57(8), 1358–1362. CrossRef
- Lai, J. S., Teresi, J., & Gershon, R. (2005). Procedures for the analysis of differential item functioning (DIF) for small sample sizes. Evaluation and the Health Professions, 28(3), 283–294. CrossRef
- Reeve, B. B., & Fayers, P. (2005). Applying item response theory modelling for evaluating questionnaire item and scale properties. In P. M. Fayers & R. D. Hays (Eds.), Assessing quality of life in clinical trials: Methods and practice (pp. 55–73). Oxford: Oxford University Press.
- McGraw, K. O., & Wong, S. P. (1996). Forming inferences about some intraclass correlation coefficients. Psychological Methods, 1(1), 30–46. CrossRef
- Lohr, K. N. (2002). Assessing health status and quality-of-life instruments: Attributes and review criteria. Quality of Life Research, 11(3), 193. CrossRef
- Clark, N. M., & Dodge, J. A. (1999). Exploring self-efficacy as a predictor of disease management. Health Education & Behavior, 26(1), 72–89. CrossRef
- Gallant, M. P. (2003). The influence of social support on chronic illness self-management: A review and directions for research. Health Education & Behavior, 30(2), 170–195. CrossRef
- Han, W. T., Collie, K., Koopman, C., Azarow, J., Classen, C., Morrow, G. R., et al. (2005). Breast cancer and problems with medical interactions: Relationships with traumatic stress, emotional self-efficacy, and social support. Psycho-Oncology, 14(4), 318–330. CrossRef
- Smith, M. Y., Winkel, G., Egert, J., Diaz-Wionczek, M., & DuHamel, K. N. (2006). Patient-physician communication in the context of persistent pain: Validation of a modified version of the patients’ perceived involvement in care scale. Journal of Pain and Symptom Management, 32(1), 71–81. CrossRef
- Linacre, M. (1994). Sample size and item calibration stability. Rasch Measurement Transactions, 7(4), 328.
- de Vet, H. C., Terwee, C. B., Knol, D. L., & Bouter, L. M. (2006). When to use agreement versus reliability measures. Journal of Clinical Epidemiology, 59(10), 1033–1039. CrossRef
- Translation and validation of the Dutch version of the Effective Consumer Scale (EC-17)
- Open Access
- Available under Open Access This content is freely available online to anyone, anywhere at any time.
Quality of Life Research
Volume 22, Issue 2 , pp 423-429
- Cover Date
- Print ISSN
- Online ISSN
- Springer Netherlands
- Additional Links
- Consumer participation
- Rasch analysis
- Industry Sectors
- Author Affiliations
- 1. Department of Psychology, Health and Technology, Arthritis Centre Twente, University of Twente, PO Box 217, 7500 AE, Enschede, The Netherlands
- 2. Department of Rheumatology, Ziekenhuisgroep Twente, PO Box 7600, Almelo, The Netherlands
- 3. Centre for Global Health, Faculty of Medicine, University of Ottawa, 1 Stewart Street, Ottawa, ON, K1N 6N5, Canada
- 4. Department of Rheumatology, Arthritis Centre Twente, Medisch Spectrum Twente, PO Box 50000, 7500 KA, Enschede, The Netherlands