OBJECTIVE: To determine the content validity and test-retest reliability of the Filipino Translated Questionnaire on Parent Attitudes About Childhood Vaccines.

METHODOLOGY: Eligible parents of patients seen at the Pediatric Outpatient Department, Pediatric Emergency Room and Pediatric Wards of the Philippine General Hospital were recruited into the study. The original survey tool was translated to Filipino by the Sentro ng Wikang Filipino. A focus group of four experts in the field of vaccination rated the content of each item on the questionnaire based on its relevance. Ten Filipino speaking participants were then recruited to check its face validity. This was then implemented to 67 Filipino speaking participants to check its test-retest reliability.

RESULTS: The overall item content validity index of the questionnaire was computed to be 0.95. All items had a 100% rating in terms of clarity and simplicity. The high intraclass correlation coefficient of 0.970 supports the tool's test-retest reliability. However, the test had a low Cronbach's ? coefficient of 0.687 which could be increased to 0.711 with the removal of one item from the question pool.

CONCLUSION: The Filipino Translated Questionnaire on Parent Attitudes About Childhood Vaccines has face and content validity with an acceptable internal consistency. This can serve as a framework for future researches on vaccine hesitancy.