OBJECTIVE: Patient enablement reflects patient's understanding of and coping with illness. The aim of this study was to investigate the content validity, construct validity, internal consistency and self-rated change (SRC) of the Patient Enablement Instrument (PEI) in patients with whiplash-associated disorders, cervical radiculopathy and mixed chronic pain treated in different settings. DESIGN: Psychometric analyses. PARTICIPANTS: Patients with disabling non-malignant chronic musculoskeletal pain. METHODS: Participants answered questionnaires on disability (Neck Disability Index (NDI) or Functional Rating Index (FRI)), anxiety/depression (Hospital Anxiety and Depression Scale; HADS) and general health (EuroQol; EQ-5D). Content validity, construct validity (confirmatory factor analysis), internal consistency and cut-off for SRC were investigated for the PEI after treatment. The SRC value was the receiver operating characteristic (ROC) curve optimal cut-off point. RESULTS: After treatment all items were completed by 516 patients (mean standard deviation (SD) age 45.1 years (SD 10.1), women 75% (n = 385)). The 1-factor PEI model had approximate fit to the data. The internal consistency Cronbach's alpha was between 0.878 and 0.929 for the 3 groups. Correlations between the PEI and the NDI/FRI, HADS and EQ-5D were fair to good. The SRCROC for whiplash-associated disorders, cervical radiculopathy and mixed chronic pain groups was 5, 6 and 4 points in the PEI, respectively. CONCLUSION: The PEI showed fair content validity, construct validity and internal consistency. However, the scale needs further development to improve measurement of change.
OBJECTIVE:Patient enablement reflects patient's understanding of and coping with illness. The aim of this study was to investigate the content validity, construct validity, internal consistency and self-rated change (SRC) of the Patient Enablement Instrument (PEI) in patients with whiplash-associated disorders, cervical radiculopathy and mixed chronic pain treated in different settings. DESIGN: Psychometric analyses. PARTICIPANTS: Patients with disabling non-malignant chronic musculoskeletal pain. METHODS:Participants answered questionnaires on disability (Neck Disability Index (NDI) or Functional Rating Index (FRI)), anxiety/depression (Hospital Anxiety and Depression Scale; HADS) and general health (EuroQol; EQ-5D). Content validity, construct validity (confirmatory factor analysis), internal consistency and cut-off for SRC were investigated for the PEI after treatment. The SRC value was the receiver operating characteristic (ROC) curve optimal cut-off point. RESULTS: After treatment all items were completed by 516 patients (mean standard deviation (SD) age 45.1 years (SD 10.1), women 75% (n = 385)). The 1-factor PEI model had approximate fit to the data. The internal consistency Cronbach's alpha was between 0.878 and 0.929 for the 3 groups. Correlations between the PEI and the NDI/FRI, HADS and EQ-5D were fair to good. The SRCROC for whiplash-associated disorders, cervical radiculopathy and mixed chronic pain groups was 5, 6 and 4 points in the PEI, respectively. CONCLUSION: The PEI showed fair content validity, construct validity and internal consistency. However, the scale needs further development to improve measurement of change.
Authors: Achim Siegel; Anna T Ehmann; Ingo Meyer; Oliver Gröne; Wilhelm Niebling; Peter Martus; Monika A Rieger Journal: Int J Environ Res Public Health Date: 2019-12-03 Impact factor: 3.390
Authors: A Molgaard Nielsen; J Hartvigsen; A Kongsted; B Öberg; P Enthoven; A Abbott; H H Lauridsen Journal: Health Qual Life Outcomes Date: 2021-04-09 Impact factor: 3.186