References
- Angst F, Goldhahn J, Pap G, et al. Cross-cultural adaptation, reliability and validity of the German Shoulder Pain and Disability Index (SPADI). Rheumatology 2007;46:87–92
- Roach KE, Budiman-Mak E, Songsiridej N, Lertratanakul Y. Development of a shoulder pain and disability index. Arthritis Rheum 1991;4:143–9
- Hepper CT, Smith MV, Steger-May K, Brophy RH. Normative data of shoulder activity level by age and sex. Am J Sports Med 2013;41:1146–51
- Brophy RH, Beauvais RL, Jones EC, et al. Measurement of shoulder activity level. Clin Orthop Relat Res 2005;439:101–8
- Jette AM. Toward a common language for function, disability, and health. Phys Therapy 2006;86:726–34
- Wright RW, Baumgarten KM. Shoulder outcomes measures. J Am Acad Orthop Surg 2010;18:436–44
- Brophy RH, Levy B, Chu S, et al. Shoulder activity level varies by diagnosis. Knee Surg Sports Traumatol Arthrosc 2009;17:1516–21
- Negahban H, Mostafaee N, Sohani SM, et al. Reliability and validity of the Tegner and Marx activity rating scales in Iranian patients with anterior cruciate ligament injury. Disabil Rehabil 2011;33:2305–10
- Marx RG, Stump TJ, Jones EC, et al. Development and evaluation of an activity rating scale for disorders of the knee. Am J Sports Med 2001;29:213–18
- Halasi T, Kynsburg Á, Tállay A, Berkes I. Development of a new activity score for the evaluation of ankle instability. Am J Sports Med 2004;32:899–908
- Brophy RH, Dunn WR, Kuhn JE, et al. Shoulder activity level is not associated with the severity of symptomatic, atraumatic rotator cuff tears in patients electing nonoperative treatment. Am J Sports Med 2014;42:1150–4
- Ryliskis S, Brophy RH, Kocius M, Marx RG. Shoulder activity level in the preoperative assessment of patients with rotator cuff tears. Knee Surg Sports Traumatol Arthrosc 2009;17:1522–8
- Nodehi Moghadam A, Niknahad A, Salavati M, Kazemnazhad A. The adaptation and experience of four shoulder patient–centered outcome scores. J Rehabil 2012;13:26–32
- Bullinger M, Alonso J, Apolone G, et al. Translating health status questionnaires and evaluating their quality: the IQOLA Project approach. International Quality of Life Assessment. J Clin Epidemiol 1998;51:913–23
- Heald SL, Riddle DL, Lamb RL. The shoulder pain and disability index: the construct validity and responsiveness of a region-specific disability measure. Phys Therapy 1997;77:1079–89
- Negahban H, Mostafaee N, Sohani SM, et al. Responsiveness and minimally important differences for selected Persian-version of outcome measures used in patients with patellofemoral pain syndrome. Disabil Rehabil 2014; [Epub ahead of print]
- Kamper SJ, Maher CG, Mackay G. Global rating of change scales: a review of strengths and weaknesses and considerations for design. J Man Manip Ther 2009;17:163–70
- Montazeri A, Goshtasebi A, Vahdaninia M, Gandek B. The Short Form Health Survey (SF-36): translation and validation study of the Iranian version. Qual Life Res 2005;14:875–82
- Fayer PM, Machin D. Quality of life: assessment, analysis and interpretation. Chichester: John Wiley & Sons; 2000
- Bot S, Terwee C, Van der Windt D, et al. Clinimetric evaluation of shoulder disability questionnaires: a systematic review of the literature. Ann Rheum Dis 2004;63:335–41
- Field A. Discovering statistics using SPSS. 2nd ed. London: SAGE Publications; 2005
- Roy JS, MacDermid JC, Woodhouse LJ. Measuring shoulder function: a systematic review of four questionnaires. Arthritis Care Res 2009;61:623–32
- Kirshner B, Guyatt G. A methodological framework for assessing health indices. J Chronic Dis 1985;38:27–36
- de Vet HC, Bouter LM, Bezemer PD, Beurskens AJ. Reproducibility and responsiveness of evaluative outcome measures. Int J Technol Assess Health Care 2001;17:479–87
- Husted JA, Cook RJ, Farewell VT, Gladman DD. Methods for assessing responsiveness: a critical review and recommendations. J Clin Epidemiol 2000;53:459–68