Multi-stage stratified cluster sampling with proportional allocation was used to determine the study population, which was equal to approximately 0.5% of all students in that age group in Taiwan.

• 本研究以结构性问卷进行资料收集，以分层集束抽样方法，依国中、高中、高职、专科（五专的一至三年级）等类别分层，按学生人数比例，抽取总学生人数的0.；5%25为研究样本。