References
- Crossley KM, Stefanik JJ, Selfe J, et al. 2016 Patellofemoral pain consensus statement from the 4th International Patellofemoral Pain Research Retreat, Manchester. Part 1: terminology, definitions, clinical examination, natural history, patellofemoral osteoarthritis and patient-reported outcome measures. Br J Sports Med. 2016;50(14):839–843.
- Smith BE, Selfe J, Thacker D, et al. Incidence and prevalence of patellofemoral pain: a systematic review and meta-analysis. PLoS One. 2018;13(1):e0190892.
- Green A, Liles C, Rushton A, et al. Measurement properties of patient-reported outcome measures (PROMS) in patellofemoral pain syndrome: a systematic review. Man Ther. 2014;19(6):517–526.
- Kujala UM, Jaakkola LH, Koskinen SK, et al. Scoring of patellofemoral disorders. Arthroscopy. 1993;9(2):159–163.
- Crossley KM, Bennell KL, Cowan SM, et al. Analysis of outcome measures for persons with patellofemoral pain: which are reliable and valid? Arch Phys Med Rehabil. 2004;85(5):815–822.
- Watson CJ, Propps M, Ratner J, et al. Reliability and responsiveness of the Lower Extremity Functional Scale and the Anterior Knee Pain Scale in patients with anterior knee pain. J Orthop Sports Phys Ther. 2005;35(3):136–146.
- Bennell K, Bartam S, Crossley K, et al. Outcome measures in patellofemoral pain syndrome: test retest reliability and inter-relationships. Phys Ther Sport. 2000;1(2):32–41.
- Esculier JF, Roy JS, Bouyer LJ. Psychometric evidence of self-reported questionnaires for patellofemoral pain syndrome: a systematic review. Disabil Rehabil. 2013;35(26):2181–2190.
- Mokkink LB, Terwee CB, Patrick DL, et al. The COSMIN checklist for assessing the methodological quality of studies on measurement properties of health status measurement instruments: an international Delphi study. Qual Life Res. 2010;19(4):539–549.
- Mokkink LB, Terwee CB, Patrick DL, et al. The COSMIN study reached international consensus on taxonomy, terminology, and definitions of measurement properties for health-related patient-reported outcomes. J Clin Epidemiol. 2010;63(7):737–745.
- Beaton DE, Bombardier C, Guillemin F, et al. Guidelines for the process of cross-cultural adaptation of self-report measures. Spine. 2000;25(24):3186–3191.
- Hott A, Liavaag S, Juel NG, et al. Study protocol: a randomised controlled trial comparing the long term effects of isolated hip strengthening, quadriceps-based training and free physical activity for patellofemoral pain syndrome (anterior knee pain). BMC Musculoskelet Disord. 2015;16(1):40.
- Hott A, Brox JI, Pripp AH, et al. Effectiveness of isolated hip exercise, knee exercise, or free physical activity for patellofemoral pain: a randomized controlled trial. Am J Sports Med. 2019;47(6):1312–1322.
- Brooks RG, Jendteg S, Lindgren B, et al. EuroQol: health-related quality of life measurement. Results of the Swedish questionnaire exercise. Health Policy. 1991;18(1):37–48.
- Thomee P, Wahrborg P, Borjesson M, et al. A new instrument for measuring self-efficacy in patients with an anterior cruciate ligament injury. Scand J Med Sci Sports. 2006;16(3):181–187.
- Strand BH, Dalgard OS, Tambs K, et al. Measuring the mental health status of the Norwegian population: a comparison of the instruments SCL-25, SCL-10, SCL-5 and MHI-5 (SF-36). Nord J Psychiatry. 2003;57(2):113–118.
- Brox JI, Gjengedal E, Uppheim G, et al. Arthroscopic surgery versus supervised exercises in patients with rotator cuff disease (stage II impingement syndrome): a prospective, randomized, controlled study in 125 patients with a 2 1/2-year follow-up. J Shoulder Elbow Surg. 1999;8(2):102–111.
- Ekeberg OM, Bautz-Holter E, Keller A, et al. A questionnaire found disease-specific WORC index is not more responsive than SPADI and OSS in rotator cuff disease. J Clin Epidemiol. 2010;63(5):575–584.
- Chavance M. Handling missing items in quality of life studies. Commun Stat Theory Methods. 2004;33(6):1371–1383.
- Giraudeau B, Mary JY. Planning a reproducibility study: how many subjects and how many replicates per subject for an expected width of the 95 per cent confidence interval of the intraclass correlation coefficient. Stat Med. 2001;20(21):3205.
- Terwee CB, Bot SD, de Boer MR, et al. Quality criteria were proposed for measurement properties of health status questionnaires. J Clin Epidemiol. 2007;60(1):34–42.
- Fleiss JL, Cohen J. The equivalence of weighted kappa and the intraclass correlation coefficient as measures of reliability. Educ Psychol Meas. 1973;33(3):613–619.
- De Vet H, Terwee C, Mokkink L, et al. Measurement in medicine: a practical guide. Cambridge: Cambridge University Press; 2011.
- McHorney CA, Tarlov AR. Individual-patient monitoring in clinical practice: are available health status surveys adequate? Qual Life Res. 1995;4(4):293–307.
- de Vet HC, Ostelo RW, Terwee CB, et al. Minimally important change determined by a visual method integrating an anchor-based and a distribution-based approach. Qual Life Res. 2007;16(1):131–142.
- Negahban H, Pouretezad M, Yazdi MJ, et al. Persian translation and validation of the Kujala Patellofemoral Scale in patients with patellofemoral pain syndrome. Disabil Rehabil. 2012;34(26):2259–2263.
- Gil-Gamez J, Pecos-Martin D, Kujala UM, et al. Validation and cultural adaptation of “Kujala Score” in Spanish. Knee Surg Sports Traumatol Arthrosc. 2016;24(9):2845–2853.
- Apivatgaroon A, Angthong C, Sanguanjit P, et al. The validity and reliability of the Thai version of the Kujala score for patients with patellofemoral pain syndrome. Disabil Rehabil. 2016;38(21):2161–2164.
- Kuru T, Dereli EE, Yaliman A. Validity of the Turkish version of the Kujala patellofemoral score in patellofemoral pain syndrome. Acta Orthop Traumatol Turc. 2010;44(2):152–156.
- Cheung RT, Ngai SP, Lam PL, et al. Chinese translation and validation of the Kujala scale for patients with patellofemoral pain. Disabil Rehabil. 2012;34(6):510–513.
- Ummels PE, Lenssen AF, Barendrecht M, et al. Reliability of the Dutch translation of the Kujala Patellofemoral Score Questionnaire. Physiother Res Int. 2017;22(1). DOI:10.1002/pri.1649.
- da Cunha RA, Costa LO, Hespanhol Junior LC, et al. Translation, cross-cultural adaptation, and clinimetric testing of instruments used to assess patients with patellofemoral pain syndrome in the Brazilian population. J Orthop Sports Phys Ther. 2013;43(5):332–339.
- Alshehri A, Lohman E, Daher NS, et al. Cross-cultural adaptation and psychometric properties testing of the Arabic Anterior Knee Pain Scale. Med Sci Monit. 2017;23:1559–1582.
- Papadopoulos C, Constantinou A, Cheimonidou AZ, et al. Greek cultural adaption and validation of the Kujala Anterior Knee Pain Scale in patients with patellofemoral pain syndrome. Disabil Rehabil. 2017;39(7):704–708.
- Cerciello S, Corona K, Morris BJ, et al. Cross-cultural adaptation and validation of the Italian versions of the Kujala, Larsen, Lysholm and Fulkerson scores in patients with patellofemoral disorders. J Orthop Traumatol. 2018;19(1):18.
- Buckinx F, Bornheim S, Remy G, et al. French translation and validation of the “Anterior Knee Pain Scale” (AKPS). Disabil Rehabil. 2019;41(9):1089–1094.
- Streiner DL, Norman GR. Health measurement scales: a practical guide to their development and use. 3rd ed. New York: Oxford University Press; 2003.
- 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. 2015;37(14):1285–1290.
- de Vet HC, Terwee CB, Ostelo RW, et al. Minimal changes in health status questionnaires: distinction between minimally detectable change and minimally important change. Health Qual Life Outcomes. 2006;4(1):54.
- Terwee CB, Roorda LD, Knol DL, et al. Linking measurement error to minimal important change of patient-reported outcomes. J Clin Epidemiol. 2009;62(10):1062–1067.
- Crossley KM, Macri EM, Cowan SM, et al. The patellofemoral pain and osteoarthritis subscale of the KOOS (KOOS-PF): development and validation using the COSMIN checklist. Br J Sports Med. 2018;52(17):1130–1136.