Instruments
’ HL
SECONDARY
We used a questionnaire to collect the baseline characteristics. The primary outcome was the decrease in the proportion of parents with low to fair HL. The secondary outcomes were changes in HL scores, accuracy of health assessment by parents, and convenience of use.We used the Thailand Health Literacy Scales, a generic, 47-item, 5-point Likert scale questionnaire to evaluate parents’ HL [Outcomes of child health assessment included weight, height/length, head circumference (below normal, normal, and above normal), development (delayed or normal), nutrition and feeding (inappropriate or appropriate), and immunization status (delayed or up to date). Growth standards were based on the Thai national growth reference [Parents rated the convenience of using the intervention (KhunLook app) or the control (MCHH) on 12 domains on a 4-rank rating scale (very easy, easy, difficult, and very difficult).