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| Subjects | Number of subjects (N) | Mean age | Serum BDNF concentration (Mean ± SD) ng/mL | p value as compared to Controls |
|---|---|---|---|---|
| The significance is set at p<0.05, where *** = p<0.001, implying an extremely significant difference. | ||||
| Controls | 25 | 7.44 years | 225.16 ± 79.54 | – |
| Group A (Typical ASD/Definite autism) | 25 | 7.61 years | 198.93 ± 65.32 | 0.19 |
| Group B (Atypical ASD) | 23 | 7.08 years | 306.68 ± 85.93 | 0.0008*** |
