Exploring the construct validity of the Patient Perception Measure - Osteopathy (PPM-O) using classical test theory and Rasch analysis

Chiropractic & Manual Therapies
Jane Mulcahy, Brett Vaughan

Abstract

Evaluation of patients' experience of their osteopathic treatment has recently been investigated leading to the development of the Patient Perception Measure - Osteopathy (PPM-O). The aim of the study was to investigate the construct validity of the PPM-O. Patients presenting to osteopathy student-led teaching clinics at two Australian universities were asked to complete two questionnaires after their treatment: a demographic questionnaire and the PPM-O. Confirmatory factor analysis (CFA) and Rasch analysis were used to investigate the construct validity of the PPM-O. Data from the present study did not fit the a-priori 6-domain structure in the CFA. Modifications to the 6-domain model were then made based on the CFA results, and this analysis identified two factors: 1) Education & Information (9 items); and 2) Cognition & Fatigue (6 items). These two factors were Rasch analysed individually. Two items were removed from the Cognition & Fatigue factor during the analysis. The two factors independently were unidimensional. The study produced a 2-factor, 13-item questionnaire that assesses the patients' perception of their osteopathic treatment using the items from a previous questionnaire. The results of the current study provide...Continue Reading

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Citations

Feb 9, 2017·Pediatric Blood & Cancer·Sagar K ChokshiKara M Kelly

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Methods Mentioned

BETA
PCA
MDA

Software Mentioned

RUMM
AMOS
SPSS
RUMM2030

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