Loading...
Design and content validation of an instrument measuring user perception of the persuasive design principles in a breastfeeding mHealth app : A modified Delphi study
Almohanna, Alaa Ali S. Win, Khin Than Meedya, Shahla Vlahu-Gjorgievska, Elena
Almohanna, Alaa Ali S.
Win, Khin Than
Meedya, Shahla
Vlahu-Gjorgievska, Elena
Abstract
Background
Persuasive design principles are increasingly employed in mHealth apps for motivating users and promoting healthy behaviours among individuals. However, how the persuasive design principles are perceived by the mHealth app users remains unclear.
Aim
To develop and validate the content validity of an instrument designed to measure the user’s perceptions of the persuasive design principles assimilated in a breastfeeding mHealth app.
Methods
A critical review of the literature guided the development of the research instrument. The developed instrument was refined and validated through a two-round modified Delphi process. Ten experts drawn from academic and clinical settings evaluated the items through two content validity indicators, relevance, and clarity and provided narrative feedback. The content validity of the instrument was determined by calculating the Content Validity Index (CVI). Content validity indicators at the scale-level (S-CVI) and item-level (I-CVI) were calculated.
Results
The results demonstrated high content validity index of individual items in the instrument. All items in the instrument reached an excellent I-CVI ≥ 0.78 for both relevance and clarity except one item. The overall content validity index of the instrument using the average approach was moderate to high (S-CVI/Ave was 0.89 and 0.92 for relevance and clarity, respectively). The developed research instrument is composed of 5 constructs representing 24 items: (1) primary task support, (2) dialogue support, (3) system credibility support, (4) social support and (5) perceived persuasiveness.
Conclusions
Using a modified Delphi approach, the development and validation of the research instrument demonstrated moderate to high content validity for measuring users’ perceptions of the persuasive design principles assimilated in a breastfeeding mHealth app. The evidence from this study supports that the research instrument is valid, relevant, and clear.
Keywords
persuasive technology, mHealth app, breastfeeding, instrument development, instrument validation, content validity, Delphi
Date
2022
Type
Journal article
Journal
International Journal of Medical Informatics
Book
Volume
164
Issue
Page Range
1-10
Article Number
Article 104789
ACU Department
School of Nursing, Midwifery and Paramedicine
Faculty of Health Sciences
Faculty of Health Sciences
Relation URI
Source URL
Event URL
Open Access Status
License
All rights reserved
File Access
Controlled
Notes
© 2022 Elsevier B.V. All rights reserved.