A single question was as predictive of outcome as the Tampa Scale for Kinesiophobia in people with sciatica: an observational study

Aaronson, 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, 1055, 10.1016/S0895-4356(98)00097-3 Atlas, 2006, The impact of disability compensation on long-term treatment outcomes of patients with sciatica due to a lumbar disc herniation, Spine, 31, 3061, 10.1097/01.brs.0000250325.87083.8d Bombardier, 2000, Outcome assessments in the evaluation of treatment of spinal disorders: summary and general recommendations, Spine, 25, 3100, 10.1097/00007632-200012150-00003 Carragee, 1997, A prospective analysis of magnetic resonance imaging findings in patients with sciatica and lumbar disc herniation. Correlation of outcomes with disc fragment and canal morphology, Spine, 22, 1650, 10.1097/00007632-199707150-00025 Cicchetti, 1994, Guidelines, criteria, and rules of thumb for evaluating normed and standardized assessment instruments in psychology, Psychological Assessment, 6, 284, 10.1037/1040-3590.6.4.284 Cohen, 1992, A power primer, Psychological Bulletin, 112, 155, 10.1037/0033-2909.112.1.155 Cronbach, 1990 Deyo, 1998, Outcome measures for low back pain research. A proposal for standardized use, Spine, 23, 2003, 10.1097/00007632-199809150-00018 Dworkin, 2005, Core outcome measures for chronic pain clinical trials: IMMPACT recommendations, Pain, 113, 9, 10.1016/j.pain.2004.09.012 Edwards, 2007, Symptoms of distress as prospective predictors of pain-related sciatica treatment outcomes, Pain, 130, 47, 10.1016/j.pain.2006.10.026 Haugen, 2008, Cross-cultural adaptation and validation of the Norwegian version of the Tampa scale for kinesiophobia, Spine, 33, E595, 10.1097/BRS.0b013e31817c6c4b Jensen, 2010, Oneyear prognosis in sick-listed low back pain patients with and without radiculopathy Prognostic factors influencing pain and disability, Spine Journal, 10, 659, 10.1016/j.spinee.2010.03.026 Jensen, 2007, Magnetic resonance imaging findings as predictors of clinical outcome in patients with sciatica receiving active conservative treatment, Journal of Manipulative and Physiological Therapeutics, 30, 98, 10.1016/j.jmpt.2006.12.004 Kori, 1990, Kinesophobia: a new view of chronic pain behaviour, Pain Management, 35 Lamers, 2006, The Dutch tariff: results and arguments for an effective design for national EQ-5D valuation studies, Health Economics, 15, 1121, 10.1002/hec.1124 Luijsterburg, 2007, Cost-effectiveness of physical therapy and general practitioner care for sciatica, Spine, 32, 1942, 10.1097/BRS.0b013e31813162f9 Luijsterburg, 2008, Physical therapy plus general practitioners’ care versus general practitioners’ care alone for sciatica: a randomised clinical trial with a 12-month follow-up, European Spine Journal, 17, 509, 10.1007/s00586-007-0569-6 Mens, 2005, NHG-Standaard Lumbosacraal radiculair syndroom, Huisarts en Wetenschap, 48, 171 Nagelkerke, 1991, A note on a general definition of the coefficient of determination, Biometrika, 78, 691, 10.1093/biomet/78.3.691 Patrick, 1995, Assessing health-related quality of life in patients with sciatica, Spine, 20, 1899, 10.1097/00007632-199509000-00011 Peduzzi, 1996, A simulation study of the number of events per variable in logistic regression analysis, Journal of Clinical Epidemiology, 49, 1373, 10.1016/S0895-4356(96)00236-3 Peul, 2008, Improving prediction of ‘inevitable’ surgery during non-surgical treatment of sciatica, Pain, 138, 571, 10.1016/j.pain.2008.02.011 Peul, 2008, Influence of gender and other prognostic factors on outcome of sciatica, Pain, 138, 180, 10.1016/j.pain.2007.12.014 Roland, 1983, A study of the natural history of back pain Part I: development of a reliable and sensitive measure of disability in low-back pain, Spine, 8, 141, 10.1097/00007632-198303000-00004 Skouen, 1997, Cerebrospinal fluid protein concentrations in patients with sciatica caused by lumbar disc herniation: an investigation of biochemical, neurologic, and radiologic predictors of longterm outcome, Journal of Spinal Disorders, 10, 505, 10.1097/00002517-199712000-00008 Stratford, 1997, Measurement properties of the RM-18. A modified version of the Roland-Morris Disability Scale, Spine, 22, 2416, 10.1097/00007632-199710150-00018 1990, EuroQol – a new facility for the measurement of health-related quality of life The EuroQol Group, Health Policy, 16, 199, 10.1016/0168-8510(90)90421-9 Tubach, 2004, Natural history and prognostic indicators of sciatica, Journal of Clinical Epidemiology, 57, 174, 10.1016/S0895-4356(03)00257-9 Valls, 2001, Factors predicting radical treatment after in-hospital conservative management of disk-related sciatica, Joint Bone Spine, 68, 50, 10.1016/S1297-319X(00)00237-2 Von Korff, 2000, Assessing global pain severity by self-report in clinical and health services research, Spine, 25, 3140, 10.1097/00007632-200012150-00009 Vroomen, 2000, When does the patient with a disc herniation undergo lumbosacral discectomy?, Journal of Neurology, Neurosurgery & Psychiatry, 68, 75, 10.1136/jnnp.68.1.75 Vroomen, 2002, Predicting the outcome of sciatica at short-term follow-up, British Journal of General Practice, 52, 119 Ware, 1996, A 12-Item Short-Form Health Survey: construction of scales and preliminary tests of reliability and validity, Medical Care, 34, 220, 10.1097/00005650-199603000-00003 Ware, 1992, The MOS 36-item shortform health survey (SF-36) I. Conceptual framework and item selection, Medical Care, 30, 473, 10.1097/00005650-199206000-00002 Weber, 1978, Lumbar disc herniation. A prospective study of prognostic factors including a controlled trial. Part II, Journal of Oslo City Hospitals, 28, 89