Kelvin Jordan

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OBJECTIVE Knee osteoarthritis (OA) is common in older adults. Determination of risk factors for onset of knee OA may help in its prevention. The objective of this systematic review, and meta-analysis, was to determine the current evidence on risk factors for knee OA. DESIGN A systematic literature search was carried out for cohort and case-control studies(More)
Understanding the course of back pain is important for clinicians and researchers, but analyses of longitudinal data from multiple time points are lacking. A prospective cohort study of consecutive back pain consulters from five general practices in the United Kingdom was carried out between 2001 and 2003 to identify groups defined by their pain pathways.(More)
Ethical guidelines in the United Kingdom require written consent from participants in epidemiologic studies for follow-up or review of medical records. This may cause bias in samples used for follow-up or medical record review. The authors analyzed data from seven general population surveys conducted in the United Kingdom (1996-2002), to which over 25,000(More)
OBJECTIVE To use a brief screening tool to identify knee pain (all knee pain, non-chronic and chronic knee pain) and associated health-care use in the general population aged 50 yr and over. METHODS A cross-sectional survey was mailed to 8995 individuals registered with three general practices in North Staffordshire, UK. The questionnaire included a Knee(More)
BACKGROUND Increased use of computers and morbidity coding in primary care delivery and research brings a need for evidence of the quality of general practice medical records. OBJECTIVE Our aim was to assess the quality, in terms of completeness and correctness, of morbidity coding in computerized general practice records through a systematic review. (More)
OBJECTIVE There is no consensus on the best method to determine the minimal important change (MIC) of patient-reported outcomes. Recent publications recommend the use of multiple methods. Our aim was to assess whether different methods lead to consistent values for the MIC. STUDY DESIGN AND SETTING We used two commonly used anchor-based methods and three(More)
BACKGROUND Primary care consultation data are an important source of information on morbidity prevalence. It is not known how reliable such figures are. AIM To compare annual consultation prevalence estimates for musculoskeletal conditions derived from four general practice consultation databases. DESIGN OF STUDY Retrospective study of general practice(More)
OBJECTIVES To assess the inter-observer and intra-observer reliability of a new three-dimensional measurement system, the FASTRAK, in measuring cervical spine flexion/extension, lateral flexion and rotation and shoulder flexion/extension, abduction and external rotation in healthy subjects. METHODS The study was conducted in two parts. One part assessed(More)
OBJECTIVE To compare methods commonly used to derive minimal important differences and recommend a rule for defining patients as clinically improved on the low back pain-specific Roland-Morris Disability Questionnaire (RMDQ). METHODS 447 primary care low back pain consulters completed a questionnaire at consultation and 6 months. Patients were classified(More)
OBJECTIVES To estimate the sensitivity to change and internal consistency of the Northwick Park Neck Pain Questionnaire (NPQ) and derive its minimal clinically important difference (MCID). METHODS Data on 311 participants in a randomized controlled trial of physical therapy for neck pain were analyzed, between baseline and 6-month follow-up. Cronbach(More)