A Decision Tree Analysis to Explore Predictors of Adolescent’s Anxiety: Focusing on Sex Differences

Abstract

We aimed to explore the factors predicting anxiety in adolescents by sex using decision tree analysis. The participants in this study included 3,940 middle and high school students from the 2021 Survey on the Mental Health of Teenagers conducted by the National Youth Policy Institute. For data analysis, the CHAID (Chi-squared Automatic Interaction Detector) algorithm was employed as the decision tree analysis method. The analysis revealed that the group with the highest anxiety among male adolescents consisted of those with low self-esteem and inconsistent parenting attitudes. In contrast, the group with the lowest anxiety among male adolescents had high self-esteem, positive family relationships, consistent parenting attitudes, and strong community support. Among female adolescents, those with the highest anxiety exhibited low self-esteem and poor family relationships. Conversely, the group with the lowest anxiety among female adolescents showed high self-esteem, low stress levels, consistent parenting attitudes, and positive relationships with teachers. Based on these findings, we proposed effective and targeted action plans to alleviate symptoms in adolescents with high anxiety and prevent anxiety according to sex-specific factors.