Effectiveness of social skills education and sandplay therapy for children with attention deficit hyperactivity disorder and comorbid anxiety

Table 2 Comparison of Parent Symptom Questionnaire scores before and after intervention in the two groups, mean ± SD

Group	Observation time	Hyperactivity index	Anxiety	Character issues
Observation group	Before intervention	1.24 ± 0.18	1.49 ± 0.34	1.28 ± 0.37
	After intervention	0.91 ± 0.16a	1.02 ± 0.15a	0.92 ± 0.35a
Control group	Before intervention	1.23 ± 0.19	1.42 ± 0.33	1.25 ± 0.27
	After intervention	1.06 ± 0.17	1.26 ± 0.22	1.17 ± 0.15

^aP < 0.05, t ≥ 2.009 or F ≥ 4.029, compared with the control group.