From: Paternal age increases the risk for autism in an Iranian population sample
 | Children with autism spectrum disorder (N= 179) | Comparison cohort (N= 549,354) | p-value |
---|---|---|---|
Mean paternal age | 33.3 | 32.0 | 0.542 |
Mean maternal age | 27.5 | 26.9 | 0.126 |
Paternal education | Â | Â | Â |
College graduate + (%) | 35.6 | 10.9 | 0.000 |
< High school (%) | 34.6 | 61.3 | Â |
Maternal education | Â | Â | Â |
College graduate + (%) | 30.7 | 7.3 | 0.000 |
< High school (%) | 35.4 | 64.4 | Â |
Birth order | Â | Â | Â |
First born (%) | 55.3 | 43.6 | 0.003 |
Sex | Â | Â | Â |
Male (%) | 79.9 | 51.6 | 0.000 |
Consanguinity (%) | Â | Â | Â |
Related parents | 32.4 | 30.4 | 0.573 |
Urban/rural | Â | Â | Â |
Urban (%) | 97 | 79 | 0.000 |