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      Factors associated with disabling low back pain among nursing personnel at a medical centre in Japan: a comparative cross-sectional survey

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          Abstract

          Objectives

          Low back pain (LBP) is a common cause of disability among nursing personnel. Although many studies regarding the risk factors for LBP among nursing staff have focused on the physical load at work, multidimensional assessments of risk factors are essential to identify appropriate preventive strategies. We aimed to investigate the association of multidimensional factors (individual, physical, psychological and occupational) with disabling LBP among nursing personnel in Japan.

          Design

          Observational study with comparative cross-sectional design.

          Setting

          Data were collected using the self-administered questionnaire at a tertiary medical centre.

          Participants

          After excluding participants with missing variables, 718 nursing personnel were included in the analysis.

          Outcome measures

          A self-administered questionnaire assessed individual characteristics, rotating night shift data, severity of LBP, previous episode of LBP, sleep problem, kinesiophobia (Tampa Scale for Kinesiophobia), depressive condition (K6), physical flexibility and frequency of lifting at work. A logistic regression model was used to evaluate the factors associated with disabling LBP (LBP interfering with work) among nursing personnel.

          Results

          Of all participants, 110 (15.3%) reported having disabling LBP. The multivariable logistic regression analysis after adjustment for several confounding factors showed that kinesiophobia (highest tertile, adjusted OR (aOR): 6.13, 95% CI : 3.34 to 11.27), previous episode of LBP (aOR: 4.31, 95% CI: 1.50 to 12.41) and insomnia (aOR: 1.66, 95% CI: 1.05 to 2.62) were significantly associated with disabling LBP.

          Conclusions

          The present study indicated that kinesiophobia, a previous episode of LBP, and sleep problems were associated with disabling LBP among nursing personnel. In the future, workplace interventions considering assessments of these factors may reduce the incidence of disabling LBP in nursing staff, although further prospective studies are needed.

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          Most cited references30

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          A consensus approach toward the standardization of back pain definitions for use in prevalence studies.

          A modified Delphi study conducted with 28 experts in back pain research from 12 countries. To identify standardized definitions of low back pain that could be consistently used by investigators in prevalence studies to provide comparable data. Differences in the definition of back pain prevalence in population studies lead to heterogeneity in study findings, and limitations or impossibilities in comparing or summarizing prevalence figures from different studies. Back pain definitions were identified from 51 articles reporting population-based prevalence studies, and dissected into 77 items documenting 7 elements. These items were submitted to a panel of experts for rating and reduction, in 3 rounds (participation: 76%). Preliminary results were presented and discussed during the Amsterdam Forum VIII for Primary Care Research on Low Back Pain, compared with scientific evidence and confirmed and fine-tuned by the panel in a fourth round and the preparation of the current article. Two definitions were agreed on a minimal definition (with 1 question covering site of low back pain, symptoms observed, and time frame of the measure, and a second question on severity of low back pain) and an optimal definition that is made from the minimal definition and add-ons (covering frequency and duration of symptoms, an additional measure of severity, sciatica, and exclusions) that can be adapted to different needs. These definitions provide standards that may improve future comparisons of low back pain prevalence figures by person, place and time characteristics, and offer opportunities for statistical summaries.
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            Psychometric properties of the TSK-11: a shortened version of the Tampa Scale for Kinesiophobia.

            The Tampa Scale for Kinesiophobia (TSK) is one of the most frequently employed measures for assessing pain-related fear in back pain patients. Despite its widespread use, there is relatively little data to support the psychometric properties of the English version of this scale. This study investigated the psychometric properties of the English version of the TSK in a sample of chronic low back pain patients. Item analysis revealed that four items possessed low item total correlations (4, 8, 12, 16) and four items had response trends that deviated from a pattern of normal distribution (4, 9, 12, 14). Consequently, we tested the psychometric properties of a shorter version of the TSK (TSK-11), having excluded the six psychometrically poor items. The psychometric properties of this measure were compared to those of the original TSK. Both measures demonstrated good internal consistency (TSK: alpha=0.76; TSK-11: alpha=0.79), test-retest reliability (TSK: ICC=0.82, SEM=3.16; TSK-11: ICC=0.81, SEM=2.54), responsiveness (TSK: SRM=-1.19; TSK-11: SRM=-1.11), concurrent validity and predictive validity. In respect of specific cut-off scores, a reduction of at least four points on both measures maximised the likelihood of correctly identifying an important reduction in fear of movement. Overall, the TSK-11 possessed similar psychometric properties to the original TSK and offered the advantage of brevity. Further research is warranted to investigate the utility of the new instrument and the cut-off scores in a wider group of chronic pain patients in different clinical settings.
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              The role of fear avoidance beliefs as a prognostic factor for outcome in patients with nonspecific low back pain: a systematic review.

              Psychological factors including fear avoidance beliefs are believed to influence the development of chronic low back pain (LBP).
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                Author and article information

                Journal
                BMJ Open
                BMJ Open
                bmjopen
                bmjopen
                BMJ Open
                BMJ Publishing Group (BMA House, Tavistock Square, London, WC1H 9JR )
                2044-6055
                2019
                27 September 2019
                : 9
                : 9
                : e032297
                Affiliations
                [1 ] departmentDepartment of Hygiene, Public Health and Preventive Medicine , Showa University School of Medicine , Shinagawa-ku, Japan
                [2 ] departmentDepartment of Medical Research and Management for Musculoskeletal Pain , The University of Tokyo , Bunkyo-ku, Japan
                [3 ] departmentDepartment of Rehabilitation , Kameda Medical Centre , Kamogawa, Japan
                Author notes
                [Correspondence to ] Dr Takahiko Yoshimoto; yoshimotota@ 123456gmail.com
                Author information
                http://orcid.org/0000-0002-3039-6179
                Article
                bmjopen-2019-032297
                10.1136/bmjopen-2019-032297
                6773308
                31562162
                858f9908-d0dc-47ba-b34c-8a351cf9c2cf
                © Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

                This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

                History
                : 12 June 2019
                : 20 August 2019
                : 29 August 2019
                Funding
                Funded by: Industrial Disease Clinical Research Grants;
                Award ID: 14020301
                Categories
                Occupational and Environmental Medicine
                Original Research
                1506
                1716
                Custom metadata
                unlocked

                Medicine
                low back pain,nurse,kinesiophobia,sleep
                Medicine
                low back pain, nurse, kinesiophobia, sleep

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