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Development and Evaluation of the Readability, Stability and Internal Consistency of a Psychometric Instrument Designed to Assess Physiotherapists Knowledge and Attributes of Professionalism

Joseph A. Balogun


Chidozie E. Mbada


Adetutu O. Balogun


Udoka A.C. Okafor

Joseph A. Balogun 1

Chidozie E. Mbada 2
Adetutu O. Balogun 3
Udoka A.C. Okafor 4

  1. Distinguished University Professor in the Department of Health Studies, College of Health Sciences, Chicago State University, U.S.A. 1

  2. Senior Lecturer in the Department of Medical Rehabilitation, Obafemi Awolowo University, Ile-Ife, Nigeria 2

  3. Adjunct Professor in the Department of Occupational Therapy, Brown Makie College, Merryville, Indiana, USA 3

  4. Senior Lecturer in the Physiotherapy Department, College of Medicine, University of Lagos, Nigeria 4

Pages: 102-117

DOI: 10.18488/journal.9.2017.46.102.117

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Article History:

Received: 02 June, 2017
Revised: 27 July, 2017
Accepted: 10 August, 2017
Published: 28 August, 2017


Background and Purpose: There is currently no culturally appropriate instrument to assess Nigerian physiotherapists’ knowledge and attributes of professionalism.  This study sets out to develop a psychometric instrument to assess the knowledge and attributes of professionalism of Nigerian physiotherapists, and to investigate the instrument's readability, stability, and internal consistency. Methods: A Professionalism Inventory with eight demographic questions, ten knowledge of professionalism questions and sixteen attributes of professionalism perception-based statements was developed. The attributes of professionalism scale assess clinical competence, a spirit of inquiry, accountability, autonomy, advocacy, innovation and visionary, collegiality and collaboration, and ethics and values. The Inventory was completed on two occasions, after two-week interval, by 91 Nigerian physiotherapists. Results: The Inventory’s average grade reading level was 10. The intra class correlation coefficient (ICC 3, 1)  for the knowledge of professionalism scale ranged from “moderate” (0.421, p<0.001) to “substantial” (0.770, p<0.001). The Kendall's coefficient of concordance for the attributes of professionalism scale ranged from “fair” (0.368, p<0.001) to “moderate” (0.547, p<0.001). The Cronbach alpha for the knowledge of professionalism scale was “almost perfect” (0.813, p<0.0001); and “substantial” (0.780, p<0.001) for professionalism attributes scale.  Conclusion: The knowledge and attributes of professionalism scales are stable and internally consistent. The availability of this psychometric instrument will promote studies of professionalism in physiotherapy.

Contribution/ Originality
This study is the first psychometric instrument developed to assess Nigerian physiotherapists’ knowledge and attributes of professionalism and also the first to document the instrument's readability, stability, and internal consistency statistical properties.


Knowledge of professionalism, Attributes of professionalism, Measuring instrument, Readability, Reliability, Internal consistency, Physiotherapist, Professionalism core-values, Fundamental elements of professionalism.


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This study received no specific financial support.

Competing Interests:

The authors declare that they have no competing interests.


All authors contributed equally to the conception and design of the study.

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