Table 1.

Descriptive statistics for measures and subscales

^*The P value was determined using the Student's t-test and one-way ANOVA; ^†P<0.05 versus grade 4 and 5 by Scheffe's post hoc test after one-way ANOVA.

RCMAS, the Revised Children's Manifest Anxiety Scale; PSWQ-CK, the Korean Version of the Penn State Worry Questionnaire for Children.