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Physiotherapy Theory and Practice
An International Journal of Physical Therapy
Volume 13, 1997 - Issue 1
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Original Article

Validation of the Oswestry Low Back Pain Disability Questionnaire, its sensitivity as a measure of change following treatment and its relationship with other aspects of the chronic pain experience

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Pages 67-80 | Published online: 10 Jul 2009

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Seth Peterson & Cheri Hodges. (2016) Lumbar lateral shift in a patient with interspinous device implantation: a case report. Journal of Manual & Manipulative Therapy 24:4, pages 215-222.
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Pu Wang, Junmei Zhang, Weijing Liao, Lei Zhao, Yi Guo, Zhuoying Qiu & Guanghui Yue. (2012) Content comparison of questionnaires and scales used in low back pain based on the international classification of functioning, disability and health: a systematic review. Disability and Rehabilitation 34:14, pages 1167-1177.
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Stewart Bruce-Low, Dave Smith, Scott Burnet, James Fisher, Gary Bissell & Leonie Webster. (2012) One lumbar extension training session per week is sufficient for strength gains and reductions in pain in patients with chronic low back pain ergonomics. Ergonomics 55:4, pages 500-507.
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Eva Rasmussen-Barr, Marco Campello, Inga Arvidsson, Lena Nilsson-Wikmar & Björn-Olov Äng. (2012) Factors predicting clinical outcome 12 and 36 months after an exercise intervention for recurrent low-back pain. Disability and Rehabilitation 34:2, pages 136-144.
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Daisuke Sato, Fumiko Kaneko & Hitoshi Okamura. (2006) Reliability and validity of the Japanese-language version of the physical performance test (PPT) battery in chronic pain patients. Disability and Rehabilitation 28:6, pages 397-405.
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Alessandro Chiarotto, Raymond W. Ostelo, Maarten Boers & Caroline B. Terwee. (2018) A systematic review highlights the need to investigate the content validity of patient-reported outcome measures for physical functioning in patients with low back pain. Journal of Clinical Epidemiology 95, pages 73-93.
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Paul W. M. Marshall, Siobhan Schabrun & Michael F. Knox. (2017) Physical activity and the mediating effect of fear, depression, anxiety, and catastrophizing on pain related disability in people with chronic low back pain. PLOS ONE 12:7, pages e0180788.
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O. M. Stokes, A. A. Cole, L. M. Breakwell, A. J. Lloyd, C. M. Leonard & M. Grevitt. (2017) Do we have the right PROMs for measuring outcomes in lumbar spinal surgery?. European Spine Journal 26:3, pages 816-824.
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A.S. Algarni, S. Ghorbel, J.G. Jones & M. Guermazi. (2014) Validation of an Arabic version of the Oswestry index in Saudi Arabia. Annals of Physical and Rehabilitation Medicine 57:9-10, pages 653-663.
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Lester Jones, G. Lorimer Moseley & Catherine Carus (Case study development). 2013. Tidy's Physiotherapy. Tidy's Physiotherapy 381 401 .
Esther T Maas, Johan NS Juch, J George Groeneweg, Raymond WJG Ostelo, Bart W Koes, Arianne P Verhagen, Merel van Raamt, Frank Wille, Frank JPM Huygen & Maurits W van Tulder. (2012) Cost-effectiveness of minimal interventional procedures for chronic mechanical low back pain: design of four randomised controlled trials with an economic evaluation. BMC Musculoskeletal Disorders 13:1.
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Peter Kent & Henrik Hein Lauridsen. (2011) Managing Missing Scores on the Roland Morris Disability Questionnaire. Spine 36:22, pages 1878-1884.
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Keith Dip Kei Luk, Thomas Wai Man Wan, Yat Wa Wong, Kenneth Man Chee Cheung, Keith Ying Kei Chan, Aldous Chun Shing Cheng, Mike Wing Wang Kwan, Karlen Kar Pui Law, Peter Wing Ho Lee & Gladys Lai Ying Cheing. (2010) A Multidisciplinary Rehabilitation Programme for Patients with Chronic Low Back Pain: A Prospective Study. Journal of Orthopaedic Surgery 18:2, pages 131-138.
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Emil Chiauzzi, Lynette A. Pujol, Mollie Wood, Kathleen Bond, Ryan Black, Elizabeth Yiu & Kevin Zacharoff. (2010) painACTION-Back Pain: A Self-Management Website for People with Chronic Back Pain. Pain Medicine 11:7, pages 1044-1058.
Crossref
Robert J. Gatchel & Brian R. Theodore. (2009) Resultados Basados en la Evidencia para la Investigación y Práctica Clínica del Dolor. Pain Practice 9:S2, pages e22-e30.
Crossref
Marco Monticone, Paola Baiardi, Silvano Ferrari, Calogero Foti, Raffaele Mugnai, Paolo Pillastrini, Carla Vanti & Gustavo Zanoli. (2009) Development of the Italian Version of the Oswestry Disability Index (ODI-I). Spine 34:19, pages 2090-2095.
Crossref
Manish Changulani & Anthony Shaju. (2008) Evaluation of responsiveness of Oswestry low back pain disability index. Archives of Orthopaedic and Trauma Surgery 129:5, pages 691-694.
Crossref
G Lorimer Moseley & Lester Jones. 2009. Ergonomics for Rehabilitation Professionals. Ergonomics for Rehabilitation Professionals.
Sharon B. Young, Charles Aprill, Jennifer Braswell, William K. Ogard, J. Scott Richards & John P. McCarthy. (2009) Psychological Factors and Domains of Neck Pain Disability. Pain Medicine 10:2, pages 310-318.
Crossref
Robert J. Gatchel & Brian R. Theodore. (2008) Evidence-Based Outcomes in Pain Research and Clinical Practice. Pain Practice 8:6, pages 452-460.
Crossref
Leah Y. Carreon, Steven D. Glassman & Jennifer Howard. (2008) Fusion and nonsurgical treatment for symptomatic lumbar degenerative disease: a systematic review of Oswestry Disability Index and MOS Short Form-36 outcomes. The Spine Journal 8:5, pages 747-755.
Crossref
D. Vogler, R. Paillex, M. Norberg, P. de Goumoëns & J. Cabri. (2008) Validation transculturelle de l’Oswestry disability index en français. Annales de Réadaptation et de Médecine Physique 51:5, pages 379-385.
Crossref
Keren Fisher. (2007) Assessing clinically meaningful change following a programme for managing chronic pain. Clinical Rehabilitation 22:3, pages 252-259.
Crossref
Robert J. Gatchel & Tom G. Mayer. 2008. Interventional Spine. Interventional Spine 1231 1238 .
Helen Poole, Sheila Glenn & Peter Murphy. (2012) A randomised controlled study of reflexology for the management of chronic low back pain. European Journal of Pain 11:8, pages 878-887.
Crossref
Henrik Hein Lauridsen, Jan Hartvigsen, Claus Manniche, Lars Korsholm & Niels Grunnet-Nilsson. (2006) Danish version of the Oswestry Disability Index for patients with low back pain. Part 1: Cross-cultural adaptation, reliability and validity in two different populations. European Spine Journal 15:11, pages 1705-1716.
Crossref
Sayed Javad Mousavi, Mohamad Parnianpour, Hossein Mehdian, Ali Montazeri & Bahram Mobini. (2006) The Oswestry Disability Index, the Roland-Morris Disability Questionnaire, and the Quebec Back Pain Disability Scale: Translation and Validation Studies of the Iranian Versions. Spine 31:14, pages E454-E459.
Crossref
Holger Osthus, Reinhard Cziske & Eckard Jacobi. (2006) Cross-Cultural Adaptation of a German Version of the Oswestry Disability Index and Evaluation of Its Measurement Properties. Spine 31:14, pages E448-E453.
Crossref
Robert J. Gatchel, Tom G. Mayer & Brian R. Theodore. (2006) The Pain Disability Questionnaire: Relationship to One-Year Functional and Psychosocial Rehabilitation Outcomes. Journal of Occupational Rehabilitation 16:1, pages 72-91.
Crossref
A. F. Mannion, A. Junge, J. C. T. Fairbank, J. Dvorak & D. Grob. (2005) Development of a German version of the Oswestry Disability Index. Part 1: cross-cultural adaptation, reliability, and validity. European Spine Journal 15:1, pages 55-65.
Crossref
M. MoonsJ. Ouwerkerk, R. Kan, M. Rentinck & H. Wittink. 2006. Fysiotherapeutische casuïstiek. Fysiotherapeutische casuïstiek 494 500 .
Melony Trott & Keren Fisher. (2016) Using Video Assessment for Clients with Chronic Low Back Pain: Is it Reliable?. British Journal of Occupational Therapy 68:12, pages 538-544.
Crossref
Dong-Yun Kim, Sang-Ho Lee, Ho-Yeon Lee, Hyun-Ju Lee, Sang-Beom Chang, Sang-Ki Chung & Hyun-Jib Kim. (2005) Validation of the Korean Version of the Oswestry Disability Index. Spine 30:5, pages E123-E127.
Crossref
Margaret Grotle, Jens I. Brox & Nina K. Vøllestad. (2005) Functional Status and Disability Questionnaires: What Do They Assess?. Spine 30:1, pages 130-140.
Crossref
Edibe Yakut, Tülin Düger, Çiğdem Öksüz, Selma Yörükan, Kemal Üreten, Deran Turan, Tüzün Frat, Sedat Kiraz, Nuray Krd, Hülya Kayhan, Yavuz Yakut & Çağatay Güler. (2004) Validation of the Turkish Version of the Oswestry Disability Index for Patients With Low Back Pain. Spine 29:5, pages 581-585.
Crossref
Anne Kärki, Riitta Simonen, Esko Mälkiä & James Selfe. (2004) Impairments, Activity limitations and participation restrictions 6 and 12 months after breast cancer operation. Journal of Rehabilitation Medicine -1:1, pages 1-1.
Crossref
Thomas L. Walsh, Brett Hanscom, Jon D. Lurie & James N. Weinstein. (2003) Is a Condition-Specific Instrument for Patients with Low Back Pain/Leg Symptoms Really Necessary?. Spine 28:6, pages 607-615.
Crossref
K Fisher & R J Hardie. (2016) Goal attainment scaling in evaluating a multidisciplinary pain management programme. Clinical Rehabilitation 16:8, pages 871-877.
Crossref
Roland K. Pratt, R. Geoffrey Burwell, Ashley A. Cole & John K. Webb. (2002) Patient and Parental Perception of Adolescent Idiopathic Scoliosis Before and After Surgery in Comparison with Surface and Radiographic Measurements. Spine 27:14, pages 1543-1550.
Crossref
R. O. Niskanen. (2016) The Oswestry Low Back Pain Disability Questionnaire a Two-Year Follow-Up of Spine Surgery Patients. Scandinavian Journal of Surgery 91:2, pages 208-211.
Crossref
C.Ellen Lee, Maureen J. Simmonds, Diane M. Novy & Stanley Jones. (2001) Self-reports and clinician-measured physical function among patients with low back pain: A comparison. Archives of Physical Medicine and Rehabilitation 82:2, pages 227-231.
Crossref
Martin Roland & Jeremy Fairbank. (2000) The Roland–Morris Disability Questionnaire and the Oswestry Disability Questionnaire. Spine 25:24, pages 3115-3124.
Crossref
Jeremy C. T. Fairbank & Paul B. Pynsent. (2000) The Oswestry Disability Index. Spine 25:22, pages 2940-2953.
Crossref
Robert Goodwin & Nicola Goodwin. (2000) An audit into a spinal rehabilitation programme. British Journal of Therapy and Rehabilitation 7:6, pages 275-281.
Crossref
H Frost, SE Lamb & CH Shackleton. (2000) A Functional Restoration Programme for Chronic Low Back Pain. Physiotherapy 86:6, pages 285-293.
Crossref
Tiina M Kuukkanen & Esko A Mälkiä. (2016) An experimental controlled study on postural sway and therapeutic exercise in subjects with low back pain. Clinical Rehabilitation 14:2, pages 192-202.
Crossref
Tiina Kuukkanen & Esko Mälkiä. (2006) Effects of a three‐month therapeutic exercise programme on flexibility in subjects with low back pain. Physiotherapy Research International 5:1, pages 46-61.
Crossref
J. Strong. (1999) Assessment of pain perception in clinical practice. Manual Therapy 4:4, pages 216-220.
Crossref
Stewart J. Taylor, Ann E. Taylor, Michael A. Foy & Anthony J. B. Fogg. (1999) Responsiveness of Common Outcome Measures for Patients With Low Back Pain. Spine 24:17, pages 1805.
Crossref
Craig E. Morris. (1999) Chiropractic rehabilitation of a patient with S1 radiculopathy associated with a large lumbar disk herniation. Journal of Manipulative and Physiological Therapeutics 22:1, pages 38-44.
Crossref

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