Development, validation and evaluation of an online medication review tool (MedReview)

Objectives: To develop, validate and evaluate a computerized clinical decision support system (MedReview) that aids medication reviewers with pharmacological decision-making. Methods: This study included three phases; the development phase included computerizing a consolidated medication review algorithm (MedReview), followed by validation and evaluation of MedReview and responding to a web-based survey designed using patient scenarios. Participants had to be ‘fully registered’ with the Malaysian Pharmacy Board and work full-time at a community pharmacy. Results: MedReview was developed as a web app. It was validated among 100 community pharmacists from May-July 2021 using the Technology Acceptance Model (TAM). There was acceptable content validity and fair inter-rater agreement, and good convergent and discriminant validity. Exploratory factor analysis resulted in five domains to determine the attitude of pharmacists about using MedReview: perceived ease of use, perceived usefulness, intention to use, trust, and personal initiatives and characteristics; the total variance explained by five factors was 76.36%. The survey questionnaire had a high overall reliability value of 0.96. Evaluation of MedReview was based on mean scores of survey items. Of all items included in the survey, the highest mean score (out of 7) was achieved for ‘I could use MedReview if it is meaningful/relevant to my daily tasks’ (5.78 ± 1.10), followed by ‘I could use MedReview if I feel confident that the data returned by MedReview is reliable’ (5.77 ± 1.21), and ‘I could use MedReview if it protects the privacy of its users’ (5.73 ± 1.20). Conclusion: Community pharmacists generally had a positive attitude towards MedReview. They found that MedReview is trustworthy and they had the intention to use it when conducting medication reviews. The adaptation of the TAM in the survey instrument was reliable and internally valid.