Table 2.

Descriptive statistics for data quality index (percentage of artifact-free segments).

Pre Assessment
	Eyes Open, M% (SD)	Eyes Closed, M% (SD)	CPT, M% (SD)
Non-ADHD control children	73.35% (27.33)	75.80% (26.49)	69.92% (26.79)
ADHD children from ESCAschool	41.28% (35.14)	37.27% (36.40)	30.96% (33.19)
ADHD adolescents from ESCAadol	54.84% (38.84)	58.12% (38.29)	49.61% (38.81)
ADHD adults from ESCAlate	57.78% (38.15)	66.61% (38.32)	64.63% (36.42)
Total	48.92% (36.87)	49.04% (38.95)	43.75% (37.42)

The pre assessment was carried out before the intense treatment schedule of the stepped-care treatment program within the ECSAlife study.