Data Collection
HL
The sequence of data collection is shown in CONSORT (Consolidated Standards of Reporting Trials) flowchart of the trial. HL: health literacy; MCHH: Maternal and Child Health Handbook.Both groups watched a 5-minute video on health assessment guidance using the KhunLook app or the MCHH. The videos were in Thai language, had matching content, and a demonstration of how to use either the KhunLook app (intervention group) or the MCHH (control group). Children’s growth parameters were measured by the health care staff and were provided to parents. Parents in the app group used the KhunLook app version 4.1 for iOS or version 4.1 for Android (equivalent in functionality); there were no changes in app versions during the trial. Parents in the MCHH group used their child’s handbook to assess their child’s growth, development, nutrition and feeding, and immunization status before meeting the physician. Physicians provided standard child health supervision, which included assessment of growth, development, and immunization status. Physicians were blinded to the parents’ group allocation, parents’ assessment of child’s health, and did not use the app. After visiting the physician, parents rated the convenience of the tool they used.At visit 2, children’s growth parameters were measured and provided to parents. Parents assessed their child’s growth, development, nutrition and feeding, and immunization status before meeting the physician using the same tool as in the first visit, without guidance. After visiting the physician, parents completed the HL questionnaire and rated the convenience of the tool they used.