Investigating the metal concentration levels in the cord blood of autistic individuals, no significant differences in comparison to the control group were found.
However, a tendency (p-value = 0.09) towards elevated levels of aluminum in autistic individuals could be observed. This trend is further supported by the wider range of distribution of the individual values in comparison to the control group.

Relating the individual concentrations to the existing literature, the values can be categorized into the groups reference concentration, which is considered to be the normally occuring concentration, and into the group above reference concentration, which can be considered as an elevated level. In the autistic group 60% of the values were above the reference concentration, whereas in the control group only 20% were above the reference concentration.
After being assigned to one of both groups, a Chi-Square-Test was conducted. This test resulted in a significant (p-value = 0.036) difference between the autistic and control group.