TABLE 1.

Criteria for inclusion based on cognitive function.

Age group	Infants (4–6 y)		Children and adolescents (7–19 y)		Adult 1 (20–49 y)		Adult 2 (≥ 50 y)
Cognitive function test	K-WPPSI	Block	CNSVS	Symbol Digit coding	CNSVS	Symbol Digit coding	CNSVS	Symbol Digit coding
		Maze		Reasoning		Reasoning		Reasoning
		Picture		Shift Attention Test		Shift Attention Test		Shift Attention Test
		Vocabulary		Verbal Memory IR and DR		Verbal Memory IR and DR		Verbal Memory IR and DR
		Similarity		Visual Memory IR and DR		Visual Memory IR and DR		Visual Memory IR and DR
		Digit Span						MMSE
Exclusion criteria	K-WPPSI and Digit Span one out of six		CNSVS one out of five tests percentile < 2% or				CNSVS and MMSE one out of six
	tests percentile < 2% or three tests < 7%
			CNSVS three out of five tests percentile < 7%				tests percentile < 2% or three tests < 7%