Murphy, N. J., Eyles, J. P., & Hunter, D. J. (2016). Hip osteoarthritis: Etiopathogenesis and implications for management. Advances in Therapy, 33(11), 1921–1946.
Article
PubMed Central
PubMed
Google Scholar
Murphy, L. B., Helmick, C. G., Schwartz, T. A., Renner, J. B., Tudor, G., Koch, G. G., et al. (2010). One in four people may develop symptomatic hip osteoarthritis in his or her lifetime. Osteoarthritis and Cartilage, 18(11), 1372–1379.
Article
CAS
PubMed Central
PubMed
Google Scholar
Culliford, D. J., Maskell, J., Kiran, A., Judge, A., Javaid, M. K., Cooper, C., et al. (2012). The lifetime risk of total hip and knee arthroplasty: Results from the UK general practice research database. Osteoarthritis and Cartilage, 20(6), 519–524.
Article
CAS
PubMed
Google Scholar
Andrianakos, A. A., Kontelis, L. K., Karamitsos, D. G., Aslanidis, S. I., Georgountzos, A. I., Kaziolas, G. O., et al. (2006). Prevalence of symptomatic knee, hand, and hip osteoarthritis in Greece. The ESORDIG study. The Journal of Rheumatology, 33(12), 2507–2513.
PubMed
Google Scholar
American Academy of Orthopaedic Surgeons (AAOS). (2017). Osteoarthritis: Function & pain assessment measure methodology report. https://www.aaos.org.pdf. Accessed 12 Feb 2020.
Google Scholar
Mokkink, L. B., Terwee, C. B., Patrick, D. L., Alonso, J., Stratford, P. W., Knol, D. L., et al. (2010). The COSMIN checklist for assessing the methodological quality of studies on measurement properties of health status measurement instruments: An international Delphi study. Quality of Life Research, 19(4), 539–549.
Article
PubMed Central
PubMed
Google Scholar
Institute of Medicine. (2001). Crossing the quality chasm: A new health system for the 21st century. Washington, DC: The National Academies Press https://doi.org/10.17226/10027. Accessed 20 Oct 2019.
Google Scholar
Dominick, K. L., Ahern, F. M., Gold, C. H., & Heller, D. A. (2004). Health-related quality of life among older adults with arthritis. Health and Quality of Life Outcomes, 2, 5. https://doi.org/10.1186/1477-7525-2-5.
Article
PubMed Central
PubMed
Google Scholar
Araujo, I. L. A., Castro, M. C., Daltro, C., & Matos, M. A. (2016). Quality of life and functional independence in patients with osteoarthritis of the knee. Knee Surgery & Related Research, 28(3), 219–224.
Article
Google Scholar
Griffin, D. R., Parsons, N., Mohtadi, N. G. H., & Safran, M. R. (2012). A short version of the international hip outcome tool (iHOT-12) for use in routine clinical practice. Arthroscopy, 28(5), 611–618.
Article
PubMed
Google Scholar
Mohtadi, N. G. H., Griffin, D. R., Pedersen, M. E., Chan, D., Safran, M. R., Parsons, N., et al. (2012). The development and validation of a self-administrated quality-of-life outcome measure for young, active patients with symptomatic hip disease: The international hip outcome tool (iHOT-33). Arthroscopy, 28(5), 595–610.
Article
PubMed
Google Scholar
Polesello, G. C., Godoy, G. F., Trindade, C. A. C., Queiroz, M. C., Honda, E., & Ono, N. K. (2012). Translation and cross-cultural adaptation of the international hip outcome tool (iHOT) into Portuguese. Acta Ortopedica Brasileira, 20(2), 88–92.
Article
PubMed Central
PubMed
Google Scholar
Jónasson, P., Baranto, A., Karlsson, J., Swärd, L., Sansone, M., Thomeé, C., et al. (2014). A standardised outcome measure of pain, symptoms and physical function in patients with hip and groin disability due to femoro-acetabular impingement: Cross-cultural adaptation and validation of the international hip outcome tool (iHOT12) in Swedish. Knee Surgery Sports Traumatology Arthroscopy, 22(4), 826–834.
Article
Google Scholar
Stevens, M., van den Akker-Scheek, I., ten Have, B., Adema, M., Giezen, H., & Reininga, I. H. (2015). Validity and reliability of the Dutch version of the international hip outcome tool (iHOT-12NL) in patients with disorders of the hip. Journal of Orthopaedic & Sports Physical Therapy, 45(12), 1026–1034.
Article
Google Scholar
Baumann, F., Popp, D., Müller, K., Müller, M., Schmitz, P., Nerlich, M., et al. (2016). Validation of a German version of the international hip outcome tool 12 (iHOT12) according to the COSMIN checklist. Health and Quality of Life Outcomes, 14, 3. https://doi.org/10.1186/s12955-016-0407-9.
Article
PubMed Central
PubMed
Google Scholar
Watanabe, N., Murakami, S., Uchida, S., Tateishi, S., Ohara, H., Yamamoto, Y., et al. (2019). Exploring the validation of a Japanese version of the international hip outcome tool 12: Reliability, validity, and responsiveness. Journal of Orthopaedic Science, 24(4), 652–657.
Article
PubMed
Google Scholar
Ipek Dongaz, O., Bayar, K., & Bayar, B. (2019). Turkish version of international hip outcome tool (IHOT-12T): Validity and reliability study. Journal of Exercise Therapy and Rehabilitation, 6(3), 211–219.
Google Scholar
World Medical Association. (2018). Declaration of Helsinki – Ethical principles for medical research involving human subjects. The World Medical Association, Inc https://www.wma.net/policies-post/wma-declaration-of-helsinki-ethical-principles-for-medical-research-involving-human-subjects/. Accessed 19 July 2018.
von Elm, E., Altman, D. G., Egger, M., Pocock, S. J., Gøtzsche, P. C., Vandenbroucke, J. P., et al. (2007). The strengthening the reporting of observational studies in epidemiology (STROBE) statement: Guidelines for reporting observational studies. Lancet, 370(9596), 1453–1457.
Article
Google Scholar
Guillemin, F., Bombardier, C., & Beaton, D. (1993). Cross-cultural adaptation of health-related quality of life measures: Literature review and proposed guidelines. Journal of Clinical Epidemiology, 46(12), 1417–1432.
Article
CAS
PubMed
Google Scholar
Guillemin, F. (1995). Cross-cultural adaptation and validation of health status measures. Scandinavian Journal of Rheumatology, 24(2), 61–63.
Article
CAS
PubMed
Google Scholar
Beaton, D. E., Bombardier, C., Guillemin, F., & Ferraz, M. B. (2000). Guidelines for the process of cross-cultural adaptation of self-report measures. Spine, 25(24), 3186–3191.
Article
CAS
PubMed
Google Scholar
Guyatt, G. H., Bombardier, C., & Tugwell, P. X. (1986). Measuring disease-specific quality of life in clinical trials. CMAJ, 134(8), 889–895.
CAS
PubMed Central
PubMed
Google Scholar
Ruiz-Ibán, M. A., Seijas, R., Sallent, A., Ares, O., Marín-Peña, O., Muriel, A., et al. (2015). The international hip outcome tool-33 (iHOT-33): Multicenter validation and translation to Spanish. Health and Quality of Life Outcomes, 13, 62. https://doi.org/10.1186/s12955-015-0255-z.
Article
PubMed Central
PubMed
Google Scholar
Kellgren, J. H., & Lawrence, J. S. (1957). Radiological assessment of osteo-arthrosis. Annals of the Rheumatic Diseases, 16(4), 494–502.
Article
CAS
PubMed Central
PubMed
Google Scholar
Puopolo, A., Boice, J. A., Fidelholtz, J. L., Littlejohn, T. W., Miranda, P., Berrocal, A., et al. (2007). A randomized placebo-controlled trial comparing the efficacy of etoricoxib 30mg and ibuprofen 2400mg for the treatment of patients with osteoarthritis. Osteoarthritis and Cartilage, 15(12), 1348–1356.
Article
CAS
PubMed
Google Scholar
Rodrigues, I. B., Adachi, J. D., Beattie, K. A., & MacDermid, J. C. (2017). Development and validation of a new tool to measure the facilitators, barriers and preferences to exercise in people with osteoporosis. BMC Musculoskeletal Disorders, 18(1), 540. https://doi.org/10.1186/s12891-017-1914-5.
Article
PubMed Central
PubMed
Google Scholar
Davis, L. L. (1992). Instrument review: Getting the most from a panel of experts. Applied Nursing Research, 5(4), 194–197. https://doi.org/10.1016/S0897-1897(05)80008-4.
Article
Google Scholar
Binkley, J. M., Stratford, P. W., Lott, S. A., & Riddle, D. L. (1999). The lower extremity functional scale (LEFS): Scale development, measurement properties, and clinical application. Physical Therapy, 79(4), 371–382.
CAS
PubMed
Google Scholar
Stasi, S., Papathanasiou, G., Anagnostou, M., Galanos, A., Chronopoulos, E., Baltopoulos, P. I., et al. (2012). Lower extremity functional scale (LEFS): Cross – cultural adaption into Greek and reliability properties of the instrument. Health Science Journal, 6(4), 750–773.
Google Scholar
Stasi, S., Papathanasiou, G., Korres, N., Marinakis, G., Chronopoulos, E., Baltopoulos, P. I., et al. (2013). Validation of the lower extremity functional scale in community-dwelling elderly people (LEFS-Greek); determination of functional status cut-off points using TUG test. European Geriatric Medicine, 4(4), 237–241.
Article
Google Scholar
Byrd, T. J. W., & Jones, K. S. (2000). Prospective analysis of hip arthroscopy with 2-year follow-up. Arthroscopy, 16(6), 578–587.
Article
CAS
PubMed
Google Scholar
Stasi, S., Papathanasiou, G., Diochnou, A., Polikreti, B., Chalimourdas, A., & Macheras, G. A. (2020). Modified Harris hip score as patient-reported outcome measure in osteoarthritic patients: Psychometric properties of the Greek version. Hip International. https://doi.org/10.1177/1120700020901682.
Jones, J. C., Rikli, R. E., & Beam, W. C. (1999). A 30-s chair-stand test as a measure of lower body strength in community-residing older adults. Research Quarterly for Exercise and Sport, 70(2), 113–119.
Article
CAS
PubMed
Google Scholar
Podsiadlo, D., & Richardson, S. (1991). The timed “up & go”: A test of basic functional mobility for frail elderly persons. Journal of the American Geriatric Society, 39(2), 142–148.
Article
CAS
Google Scholar
Nightingale, E. J., Pourkazemi, F., & Hiller, C. E. (2014). Systematic review of timed stair tests. Journal of Rehabilitation Research & Development, 51(3), 335–350.
Article
Google Scholar
Nunnally, J. (1978). Psychometric methods (p. 421). New York: McGraw-Hill.
Google Scholar
Cappelleri, J. C., Lundy, J. J., & Hays, R. D. (2014). Overview of classical test theory and item response theory for quantitative assessment of items in developing patient-reported outcome measures. Clinical Therapy, 36(5), 648–662.
Article
Google Scholar
Terwee, C. B., Mokkink, L. B., Knol, D. L., Ostelo, R. W. J. B., Bouter, L. M., & de Vet, H. C. (2012). Rating the methodological quality in systematic reviews of studies on measurement properties: A scoring system for the COSMIN checklist. Quality of Life Research, 21, 651–657.
Article
PubMed
Google Scholar
Reeve, B. B., Hays, R. D., Bjorner, J. B., et al. (2007). Psychometric evaluation and calibration of health-related quality of life item banks: Plans for the patient-reported outcomes measurement information system (PROMIS). Medical Care, 45(5 Suppl 1), S22–S31.
Article
PubMed
Google Scholar
Flora, D. B., & Curran, P. J. (2004). An empirical evaluation of alternative methods of estimation for confirmatory factor analysis with ordinal data. Psychological Methods, 9, 466–491. https://doi.org/10.1037/1082-989X.9.4.466.
Article
PubMed Central
PubMed
Google Scholar
Nunnally, J. C., & Bernstein, I. H. (1994). Psychometric theory (3rd ed.). New York: McGraw-Hill.
Google Scholar
Terwee, C. B., Bot, S. D. M., de Boer, M. R. D. A. W., van der Windt, Μ., Knol, D. L., Dekker, J., et al. (2007). Quality criteria were proposed for measurement properties of health status questionnaires. Journal of Clinical Epidemiology, 60(1), 34–42.
Article
PubMed
Google Scholar
Bland, J. M., & Altman, D. G. (1986). Statistical methods for assessing agreement between two methods of clinical measurement. Lancet, 327(8476), 307–310. https://doi.org/10.1016/S0140-6736(86)90837-8.
Article
Google Scholar
Weir, J. P. (2005). Quantifying test-retest reliability using the intraclass correlation coefficient and the SEM. Journal of Strength and Conditioning Research, 19(1), 231–240.
PubMed
Google Scholar
Polit, D. F., & Beck, C. T. (2006). The content validity index: Are you sure you know what’s being reported? Critique and recommendations. Research in Nursing and Health, 29, 489–497.
Article
PubMed
Google Scholar
Schober, P., Boer, C., & Schwarte, L. A. (2018). Correlation coefficients: Appropriate use and interpretation. Anesthesia and Analgesia, 126(5), 1763–1768.
Article
PubMed
Google Scholar
Spearman’s correlation – Statstutor. Available at: http://www.Statstutor.ar.uc.pdf. Assessed 24 Mar 2019.
Liang, M. H., Fossel, A. H., & Larson, M. G. (1990). Comparisons of five health status instruments for orthopedic evaluation. Medical Care, 28(7), 632–642.
Article
CAS
PubMed
Google Scholar
Cohen, J. (1988). Statistical power analysis for the behavior sciences (2nd ed.). Hillsdale: Lawrence Erlbaum Associates.
Google Scholar
Usunier, J.C. (2011). Conceptual equivalence. L. Moutinho, G. Hutcheson (Εds), The Sage dictionary of quantitative management research (50). London: SAGE Publications.
Keszei, A. P., Novak, M., & Streiner, D. L. (2010). Introduction to health measurement scales. Journal of Psychosomatic Research, 68(4), 319–323.
Article
PubMed
Google Scholar
Roos, E. M., Engelhart, L., Ranstam, J., Anderson, A. F., Irrgang, J. J., Marx, R. G., et al. (2011). ICRS recommendation document: Patient-reported outcome instruments for use in patients with articular cartilage defects. Cartilage, 2(2), 122–136.
Article
PubMed Central
PubMed
Google Scholar
Terwee, C. B., Dekker, F. W., Wiersinga, W. M., Prummel, M. F., & Bossuyt, P. M. (2003). On assessing responsiveness of health-related quality of life instruments: Guidelines for instrument evaluation. Quality of Life Research, 12(4), 349–362.
Article
CAS
PubMed
Google Scholar
Lee, D. K., In, J., & Lee, S. (2015). Standard deviation and standard error of the mean. Korean Journal of Anesthesiology, 68(3), 220–223.
Article
PubMed Central
PubMed
Google Scholar
Taylor, B.N., & Kuyatt, C.E. Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement Results. NIST TN 1297: Appendix D1.Terminology (p.14). https://www.nist.gov/pml/nist-technical-note-1297/nist-tn-1297-appendix-d1-terminology. Accessed 8 Feb 2020.
Waltz, C. F., Strickland, O., & Lenz, E. R. (2010). Measurement in nursing and health research (4th ed.). New York: Springer Publishing Company.
Google Scholar
Wright, A. A., Cook, C. E., Baxter, G. D., Garcia, J., & Abbott, J. H. (2010). Relationship between the Western Ontario and McMaster Universities Osteoarthritis Index Physical Function Subscale and physical performance measures in patients with hip osteoarthritis. Archives of Physical Medicine and Rehabilitation, 91(10), 1558–1564.
Article
PubMed
Google Scholar
Stratford, P. W., & Kennedy, D. M. (2006). Performance measures were necessary to obtain a complete picture of osteoarthritic patients. Journal of Clinical Epidemiology, 59(2), 160–167.
Article
PubMed
Google Scholar