Table 2 Correlation between the levels of the studied elements in the hair of the case group and the control group
From: Analysis of lead, arsenic and calcium content in the hair of children with autism spectrum disorder
Case group | Control group | ||||||
|---|---|---|---|---|---|---|---|
As | Ca | Pb | As | Ca | Pb | ||
Case group | As | – | 0.11 | 0.36* | |||
Ca | 0.11 | – | −0.18 | ||||
Pb | 0.36* | −0.18 | – | ||||
Control group | As | – | −0.22 | −0.08 | |||
Ca | −0.22 | – | − 0.15 | ||||
Pb | −0.08 | −0.15 | – | ||||