Appendix S1 - What Time Periods of the Day Are Concerning for Parents of Children with Attention Deficit Hyperactivity Disorder?

Questionnaire-Children with Difficulties (English version*). To prevent misinterpretation and biases, two Japanese psychiatrists with a good command of English, who understood the background and objectives of the evaluation scale, independently carried out forward translation of the QCD into English. Then, the two translators discussed and integrated the two translated versions into one. Another psychiatrist did back translation to Japanese, the original language. The back-translated version was examined by the author of the original version and it was confirmed that the intent of the author was accurately translated. After the final proofreading, construction of the QCD English version was completed. (DOCX)