. 2023 Aug 9;9(8):e18624. doi: 10.1016/j.heliyon.2023.e18624

Table 5.

Association of toxic plasma Cu levels with ASD in children of different age groups.

		Plasma Cu level		Total (n)	p-value
		Normal	Toxic	Total (n)	p-value
Age 2–5 years	ASD	11 (64.7%)	6 (35.3%)	17	0.011*
Age 2–5 years	Control	16 (88.9%)	2 (11.1%)	18
Age 6–9 years	ASD	8 (44.4%)	10 (55.6%)	18	0.724 ^ns
Age 6–9 years	Control	7 (50%)	7 (50%)	14

The data are expressed as the number of subjects. Figures in parentheses indicate percentages. Statistical analyses were done by the Chi-Square test. ^ns=Non-significant (p>0.05); *: Statistically significant (p ≤ 0.05); n=number of subjects.