Journal of Young Pharmacists logo
Submit
Journal of Young PharmacistsACADEMIC PUBLISHING
Article

Psychometric Classical Theory Test and Item Response Theory Validation of Patients’ Knowledge, Attitudes and Practices of Uncomplicated Malaria Instrument

1,2, 1, 1★★ Corresponding author

  1. 1Department of Clinical Pharmacy, Faculty of Pharmacy, MAHSA University, Selangor, MALAYSIA.
  2. 2Department of Clinical Pharmacy and Pharmacy Practice, Faculty of Pharmaceutical Sciences, University of Jos, Plateau State, NIGERIA.

CORRESPONDENCE

Nahlah Elkudssiah Ismail

Department of Clinical Pharmacy, Faculty of Pharmacy, MAHSA University, Selangor, MALAYSIA.

nahlah@mahsa.edu.my

Received: 15-10-2018; Revised: 03-01-2019; Accepted: 14-02-2019.

Volume 11, Issue 2 · pp. 186-191 · 2019 · DOI: 10.5530/jyp.2019.11.39

ABSTRACT

Objective: To develop and validate Patients’ Knowledge, Attitudes and Practices Instrument for Uncomplicated Malaria (PKAPIUM) through Classical Test Theory (CTT) complemented by Items Response Theory (IRT).Methods: A draft 31-items’ scale was developed using relevant variables from literature and initially screened by six experts before it was used to collect data from 300 patients receiving treatment for uncomplicated malaria in Primary Health Care (PHC) facilities in Plateau state, Nigeria. An orchestrated classical and modern psychometric approach including CTT and IRT was then used to validate the draft instrument through IBM® Statistical Package for Social Sciences (SPSS®) version 23 and Analysis of Moment Structures (AMOS™) software version 22 and Bond and Fox software®, respectively.Results: The 31-items’ draft scale showed good Item’s Content Validity Index (I-CVI) (> 0.8) with good Universal Agreement (UA) level of Scale Content Validity Index (S-CVI/UA) (0.9 – 1) and average CVI (S-CVI/Ave) (0.98 – 1). The CTT and Rasch analyses resulted in retention of twenty one items distributed under Knowledge, Attitude and Practice (KAP) constructs, with Average Variance Extracted (AVE), square root AVE, chi-square, Standardized Root Mean square Residual (SRMR), Root Mean Square Error Approximation (RMSEA), items’ infit Mean Square (MNSQ), Infit Standardized Z-scores (infit Zstds), Point-Measure Correlation Coefficients (PTMEA Corr), Cronbach’s alpha, items’ and person’s reliability indices within accepted limits.Conclusion: The new scale was considered valid and reliable for assessing patients’ knowledge, attitudes and practices on uncomplicated malaria.

KEYWORDS

Open in new tab

REFERENCES

As published

Showing references and in-text citations exactly as published.

    Cite this article

    SELECT FORMAT

    Jimam, N. S., Ahmad, S., & Ismail, N. E. (2019). Psychometric Classical Theory Test and Item Response Theory Validation of Patients’ Knowledge, Attitudes and Practices of Uncomplicated Malaria Instrument. Journal of Young Pharmacists, 11(2), 186-191. https://doi.org/10.5530/jyp.2019.11.39

    Copyright and licence

    © 2019 Author(s)

    This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms. CC BY-NC-SA 4.0