This study aimed to develop and validate whole grain KAP questionnaire among children. A
guided self-administered questionnaire was developed. In this cross sectional study, a total
of 207 children aged 9 to 11 years in Kuala Lumpur, Malaysia were recruited. Knowledge
domain was considered as optimal level of difficulty and able to discriminate performance of
good and poor children. Construct validity was assessed using exploratory factor analysis with
principle components method and varimax rotation. Four factor-solutions emerged for attitude
domain whereas 3 factor-solutions were constructed for practice domain. Internal consistency
was acceptable for knowledge (KR20=0.70), attitude (CA=0.72) and practice (CA=0.73).
Test-retest reliability intra-class correlation coefficients for knowledge, attitude and practice
domains were 0.80, 0.78 and 0.79 (p