David Høyrup Christiansen

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OBJECTIVE To cross-culturally adapt the Danish version of the Shoulder Pain and Disability Index and to evaluate its measurement properties in terms of reliability and known-group validity. DESIGN Test-retest study. SETTING Outpatient Clinic of the Department of Orthopaedic Surgery, Regional Hospital Herning, Denmark. SUBJECTS Consecutive shoulder(More)
STUDY DESIGN Randomized clinical trial comparing two interventions in employees sick-listed 3 to 16 weeks because of low back pain (LBP). OBJECTIVE To compare 1-year return to work (RTW), pain, disability and physical and mental health dimensions in subjects offered a hospital-based multidisciplinary intervention or a brief intervention. SUMMARY OF(More)
INTRODUCTION The Constant Score (CS), developed as a scoring system to evaluate overall functionality of patients with shoulder disorders, is widely used but has been criticised for relying on an imprecise terminology and for lack of a standardised methodology. A modified guideline was therefore published in 2008 with several new recommendations, but a(More)
STUDY DESIGN Test-retest study. Objectives To assess the reliability, agreement, and validity of the Danish version of the modified Constant-Murley score (CMS). BACKGROUND Modified CMS guidelines were published in 2008. These modifications have recently been translated and cross-culturally adapted into a Danish version. However, the reliability and the(More)
STUDY DESIGN Prospective cohort study nested in a randomized clinical trial. OBJECTIVE To investigate the prognostic value of pain response classification at initial physiotherapy examination in patients with low back pain (LBP) who are sick-listed. BACKGROUND Recurrent and chronic LBP accounts for a substantial proportion of all absence from work. In(More)
Study Design A prospective cohort study nested in a randomized controlled trial. Objectives To determine and compare responsiveness and minimal clinically important change of the modified Constant score (CS) and the Oxford Shoulder Score (OSS). Background The OSS and the CS are commonly used to assess shoulder outcomes. However, few studies have evaluated(More)
BACKGROUND Multidisciplinary intervention is recommended for rehabilitation of employees sick-listed for 4-12 weeks due to low back pain (LBP). However, comparison of a brief and a multidisciplinary intervention in a randomised comparative trial of sick-listed employees showed similar return to work (RTW) rates in the two groups. The aim of the present(More)
OBJECTIVES The aims of the present study were to (i) cross-culturally adapt a Danish consensus version of the 10-item Perceived Stress Scale (PSS-10) and (ii) evaluate its psychometric properties in terms of agreement, reliability, validity, responsiveness, and interpretability among patients with work-related stress complaints. METHODS A(More)
OBJECTIVE Repeated end-range spinal movements producing specific pain responses (i.e. centralization or non-centralization) may be used for diagnostic and prognostic purposes. However, possible associations between psychological factors and pain responses have been reported. The aim of this study was to investigate the associations between pain responses in(More)
BACKGROUND Surgery for subacromial impingement syndrome is often performed in working age and postoperative physiotherapy exercises are widely used to help restore function. A recent Danish study showed that 10% of a nationwide cohort of patients retired prematurely within two years after surgery. Few studies have compared effects of different postoperative(More)