BackgroundThis study aimed to determine the elements and the extent of information that child participants and their parents would like to read in an informed assent form /informed consent form of a pediatric drug trial.MethodsA descriptive survey was conducted to determine the perceived importance of each element of the ICF content from child participants and their parents who underwent informed assent/consent of a multi-center pediatric drug trial. The respondents were asked to indicate the level of importance of each item in (...) a questionnaire, by giving a rating scale from 1 to 5.ResultsA total of 22 families, 17 child participants with the diagnosis of hematology or oncology diseases and 27 parents, were enrolled. Among 30 items, risk–benefit aspects were perceived to be of most concerning items from both child participants’ and parents’ viewpoint. None of the items were considered ‘slightly important’ or lower by more than 20% of the respondents.ConclusionsFor pediatric drug trials, risk–benefit information should be made a salient feature of an IAF/icf. This empirical data could help related stakeholders arrange essential information in order of importance and tailor an IAF/icf to better suit child participants’ and parents’ needs, particularly for pediatric drug trials involving children with the diagnosis of hematology or oncology diseases. (shrink)