Validity and reliability of online questionnaire on awareness, knowledge, attitude and self-efficacy (AKAS) on healthy eating for nutrition education and promotion
https://doi.org/10.31246/mjn-2021-0099
- Author:
Milflor S. Gonzales
1
;
Idelia G. Glorioso
1
;
Celina Ann J. Navarro
1
;
Theresa Krista B. Jolejole
1
Author Information
1. Food and Nutrition Research Institute, Department of Science and Technology, DOST Compound, General Santos Avenue, Bicutan, Taguig City, Philippines
- Publication Type:Journal Article
- Keywords:
cognitive debriefing, Delphi technique, nutrition education
- From:
Malaysian Journal of Nutrition
2023;29(No.1):115-135
- CountryMalaysia
- Language:English
-
Abstract:
Introduction: This study entailed the process of developing an online questionnaire
to determine awareness, knowledge, attitude and self-efficacy (AKAS) on healthy
eating for nutrition education. Currently, there is no local validated questionnaire
that can be used to assess AKAS on healthy eating among Filipino adults. Methods:
The study developed the questionnaire based on theoretical frameworks and
literature review. The draft questionnaire underwent three stages of development: (1)
online modified Delphi technique composing of seven subject matter experts (SME)
for content validity; (2) online cognitive debriefing with 32 participants (14 nutrition
experts and 18 general public) for construct validity; and (3) online pre-testing
with 35 participants (non-nutritionists) using test-retest method. Results: For first
stage, the questionnaire contained 16 questions for awareness, 17 questions for
knowledge, 17 questions for attitude, and 15 questions for self-efficacy. For second
stage, significantly different scores (p-value<0.00) between nutritionist experts and
general public were observed, showing good construct validity. For third stage,
Spearman’s correlation of test-retest method was 0.640. The questionnaire yielded
Cronbach’s alpha of 0.467 to 0.923 (round 1) and 0.435 to 0.923 (round 2). A
second analysis was done to improve the internal consistency of the questionnaire.
By combining two question categories (awareness and knowledge), the Cronbach’s
alpha increased to 0.659 (round 2), and by deleting three questions in attitude
category, the Cronbach’s alpha improved to 0.626 (round 2). Conclusion: The
process used ensured the questionnaire’s validity and reliability. Hence, this online
questionnaire may be adopted by parties interested in developing and assessing
nutrition education.
- Full text:4.2023my0607.pdf
