The Patient Enablement Instrument for Back Pain: Reliability, Content Validity, Construct Validity and Responsiveness

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Molgaard Nielsen, AUniversity of Southern Denmark, Denmark (author)

The Patient Enablement Instrument for Back Pain : Reliability, Content Validity, Construct Validity and Responsiveness

BookEnglish2020

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Research Square Platform LLC,2020
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LIBRIS-ID:oai:DiVA.org:liu-173819
https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-173819URI
https://doi.org/10.21203/rs.3.rs-117458/v1DOI

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Language:English
Summary in:English

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From Research Square "This preprint is under consideration at Health and Quality of Life Outcomes. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal."
BackgroundCurrently, there are no outcome measures assessing the ability of people with non-specific low back pain to self-manage their illness. Inspired by the ‘Patient Enablement Instrument’, we developed the Patient Enablement Instrument for Back Pain (PEI-BP). The aim of this study was to describe the development of the Patient Enablement Instrument for Back Pain (PEI-BP) and investigate content validity, construct validity, internal consistency, test-retest reliability, measurement error, responsiveness and floor and ceiling effects.MethodsThe PEI-BP consists of 6 items that are rated on a 0-10 Numeric Rating Scale. Measurement properties were evaluated using the COSMIN taxonomy and were based on three cohorts from primary care with low back pain: The content validity cohort (N=14) which participated in semi-structured interviews, the GLA:D Back cohort (N=272) and the test-retest cohort (N=37) which both completed self-reported questionnaires. For construct validity and responsiveness, enablement was compared to disability (Oswestry Disability Index), back pain beliefs (Brief Illness Perception Questionnaire), fear avoidance (Fear-Avoidance Beliefs Questionnaire – physical activity), mental health (SF-36), educational level and number of previous episodes of low back pain.ResultsThe PEI-BP was found to have acceptable content validity, construct validity, reliability (internal consistency, test-retest reliability and measurement error) and responsiveness. The Smallest Detectable Change was 10.1 points illustrating that a patient would have to change more than 1/6 of the scale range for it to be a true change. A skewed distribution towards the high scores were found at baseline indicating a potentially problematic ceiling effect in the current population.ConclusionsThe PEI-BP can be considered a valid and reliable tool to measure enablement on people seeking care for non-specific LBP. Further testing of the PEI-BP in populations with more severe LBP is recommended.

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Hartvigsen, JNordic Institute of Chiropractic and Clinical Biomechanics, Denmark; University of Southern Denmark, Denmark (author)
Öberg, Birgitta,1951-Linköpings universitet,Medicinska fakulteten,Avdelningen för prevention, rehabilitering och nära vård(Swepub:liu)birob80 (author)
Enthoven, Paul,1955-Linköpings universitet,Medicinska fakulteten,Avdelningen för prevention, rehabilitering och nära vård(Swepub:liu)pauen91 (author)
Abbott, Allan,1978-Linköpings universitet,Avdelningen för prevention, rehabilitering och nära vård,Medicinska fakulteten,Region Östergötland, Ortopedkliniken i Linköping(Swepub:liu)allab56 (author)
Lauridsen, H HUniversity of Southern Denmark, Denmark (author)
University of Southern Denmark, DenmarkNordic Institute of Chiropractic and Clinical Biomechanics, Denmark; University of Southern Denmark, Denmark (creator_code:org_t)

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MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Health Sciences; and Physiotherapy

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