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OBJECTIVE: To quantify and compare associations and relationships between self-rated and tested assessments of mainly mobility-related physical function in different diagnoses. DESIGN: Six longitudinal cohort studies before and after inpatient rehabilitation. PATIENTS: Patients with whiplash-associated disorder (n = 71), low back pain (n = 121), fibromyalgia (n = 84), lipoedema (n = 27), lymphoedema (n = 78), and post-acute coronary syndrome (n = 64). METHODS: Physical function was measured with the self-rated Short-Form 36 Physical functioning (SF-36 PF) and with the tested 6-Min Walk Distance (6MWD) and assessed by correlation coefficients. Across the 6 cohorts, the relationship between the 2 scores was compared using the ratio between them. RESULTS: The correlations between the 2 scores were mostly moderate to strong at baseline (up to r = 0.791), and weak to moderate for the changes to follow-up (up to r = 0.408). The ratios SF-36 PF to 6MWD were 1.143-1.590 at baseline and 0.930-3.310 for the changes, and depended on pain and mental health. CONCLUSION: Moderate to strong cross-sectional and moderate to weak longitudinal correlations were found between the 6MWD and the SF-36 PF. Pain and mental health should be considered when interpreting physical function. For a comprehensive assessment in clinical practice and research, the combination of self-rated and tested physical function measures is recommended.
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BACKGROUND: The aim was to quantify and to compare the associations between longitudinal changes in pain and depression in different chronic pain conditions. METHODS: Data were retrieved from 6 observational cohort studies. From baseline to the 6-month follow-up, the score changes on the Short Form (36) Health Survey (SF-36) bodily pain (pain) and the SF-36 mental health (depression) scales (0=worst, 100=best) were quantified, using partial correlations obtained by multiple regression. Adjustment was performed by age, living alone/with partner, education level, number of comorbidities, baseline pain and baseline depression. RESULTS: Stronger associations were found between changes in levels of pain and depression for neck pain after whiplash (n = 103, mean baseline pain=21.4, mean baseline depression=52.5, adjusted correlation r = 0.515), knee osteoarthritis (n = 177, 25.4, 64.2, r = 0.502), low back pain (n = 134, 19.0, 49.4, r = 0.495), and fibromyalgia (n = 125, 16.8, 43.2, r = 0.467) than for lower limb lipedema (n = 68, 40.2, 62.6, r = 0.452) and shoulder arthroplasty (n = 153, 35.0, 76.4, r = 0.292). Those correlations were somewhat correlated to baseline pain (rank r=-0.429) and baseline depression (rank r=-0.314). LIMITATIONS: The construct of the full range of depressive symptoms is not explicitly covered by the SF-36. CONCLUSIONS: Moderate associations between changes in pain and depression levels were demonstrated across 5 of 6 different chronic pain conditions. The worse the pain and depression scores at baseline, the stronger those associations tended to be. Both findings indicate a certain dose-response relationship - an important characteristic of causal interference. Relieving pain by treatment may lead to the relief of depression and vice versa.
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OBJECTIVE: Upper extremity lymphedema (UEL) is a burdensome disease with significant impact on quality of life underscoring the importance of quality of life measurements in this patient population. Only recently, the LYMPH Q Upper Extremity Module, a new patient-reported outcome measurement (PROM), has been developed. The aim of the study was to translate the LYMPH Q Upper Extremity Module from English to German and perform a comprehensive validation. METHODS: Translation was performed in accordance with the International Society for Pharmacoeconomics and Outcomes Research (ISPOR) best-practice guidelines. To validate the German LYMPH Q, a multicenter study was conducted. Internal consistency was determined by Cronbach's alpha. Reliability was assessed by the intra-class correlation coefficient (ICC). To analyse construct validity, a Pearson correlation coefficient between the LYMPH Q, quickDASH and SF-36 was calculated. Responsiveness was assessed by comparing the pre- and postoperative LYMPH Q scores in five patients receiving lymphatic reconstructive surgery. RESULTS: Validation was performed in a cohort of 65 patients. Internal consistency of the different domains was good to excellent (α: 0.87-0.97). ICC ranged from 0.74 to 0.92. The domains of the LYMPH Q correlated significantly with the corresponding domains of the SF-36 and quick DASH. Construct validity was good with eight of ten hypotheses confirmed. Significant improvements of function (46.4 ± 13.3 vs. 77.8 ± 11.5; p= 0.03), symptoms (42.0 ± 10.7 vs. 70.6 ± 11.6; p= 0.02) and psychological well-being (40.4 ± 14.6 vs. 78.0 ± 17.3; p= 0.03) were observed after lymphatic reconstructive surgery. CONCLUSION: The German version of The LYMPH Q Upper Extremity Module is conceptually equivalent to the original English version. It is a reliable and valid PROM to assess physical and psychological impairments in patients with UEL.
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- Lipedema (1)
- Original studies and data (3)
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- Journal Article (3)