Development and Validation of Knowledge, Attitude and Practice on Healthy Lifestyle Questionnaire (KAP-HLQ) for Malaysian Adolescents

Abstract

Objective: To develop and determine validity and reliability of the Knowledge, Attitude and Practice on Healthy Lifestyle Questionnaire (KAP-HLQ) among lower secondary adolescents. Methods: The KAP-HLQ was developed with 56 knowledge, 62 attitude and 60 practice items on healthy lifestyle, and was completed by 647 Malaysian adolescents (13 to 15 years old) from 12 schools. Results: Content validity and face validity of the KAP-HLQ were determined by three experts and 36 adolescents, respectively. Four attitude and six practice dimensions were identified through factor analysis in construct validity. Significant correlations between knowledge, attitude and practice showed adequate convergent validity. KAP-HLQ is reliable based on its internal consistency reliability (knowledge: α=0.654, attitude: α=0.845, practice: α=0.636) and test-retest reliability (knowledge: r=0.631; attitude: r=0.358; practice: r=0.481). Conclusion: Evidence of validity and reliability of the KAP-HLQ (42 knowledge, 27 attitude, 28 practice items) have been obtained and can be used to assess KAP on healthy lifestyle among Malaysian adolescents.