Table 1.
Mercury (μg/L), lead (μg/dl), GST (μmol/l) and vitamin E (nmol/L) levels in the control & autistic groups
| Parameters | Group | N | Mean ± S.D. | P value a | P value b |
|---|---|---|---|---|---|
|
Mercury (μg/L) |
Control |
32 |
5.12 ± 0.83 |
|
|
| |
Patients with autism |
58 |
6.99 ± 0.94 |
|
0.001 |
| |
Autism (mild to moderate in CARS) |
29 |
6.49 ± 0.65 |
0.042 |
0.001 |
| |
Autism (severe in CARS) |
28 |
7.31 ± 0.49 |
0.001 |
|
| |
Autism (mild to moderate in SRS) |
22 |
7.02 ± 0.85 |
0.050 |
0.001 |
| |
Autism (severe in SRS) |
22 |
7.46 ± 0.59 |
0.001 |
|
|
Lead (μg/dl) |
Control |
32 |
4.73 ± 0.67 |
|
|
| |
Patients with autism |
58 |
6.79 ± 0.97 |
|
0.001 |
| |
Autism (mild to moderate in CARS) |
29 |
6.34 ± 0.82 |
0.041 |
0.001 |
| |
Autism (severe in CARS) |
28 |
6.80 ± 0.83 |
|
0.001 |
| |
Autism (mild to moderate in SRS) |
22 |
6.42 ± 0.84 |
0.040 |
0.001 |
| |
Autism (severe in SRS) |
22 |
6.95 ± 0.81 |
|
0.001 |
|
GST (μmol/min/ml) |
Control |
30 |
0.61 ± 0.17 |
|
|
| |
Patients with autism |
30 |
0.30 ± 0.08 |
|
0.001 |
| |
Autism (mild to moderate in CARS) |
18 |
0.31 ± 0.07 |
0.043 |
0.001 |
| |
Autism (severe in CARS) |
12 |
0.26 ± 0.07 |
0.001 |
|
| |
Autism (mild to moderate in SRS) |
8 |
0.32 ± 0.07 |
0.027 |
0.001 |
| |
Autism (severe in SRS) |
18 |
0.25 ± 0.06 |
0.001 |
|
|
Vitamin E (nmol/L) |
Control |
27 |
25.44 ± 2.62 |
|
|
| |
Patients with autism |
28 |
14.45 ± 2.28 |
|
0.001 |
| |
Autism (mild to moderate in CARS) |
11 |
14.56 ± 1.58 |
0.048 |
0.001 |
| |
Autism (severe in CARS) |
17 |
13.36 ± 1.47 |
0.001 |
|
| |
Autism (mild to moderate in SRS) |
11 |
14.85 ± 1.36 |
0.044 | 0.001 |
| Autism (severe in SRS) | 12 | 13.35 ± 1.14 | 0.001 |
aP value between mild to moderate and severe in CARS and SRS.
bP value between control and autistic groups.