Table 3 Sample classes as a function of parental or maternal age at birth
From: Advanced paternal age is a risk factor for schizophrenia in Iranians
Group | Parental age at birth, n (%) | Total (P= 0.065) | |||
|---|---|---|---|---|---|
| Â | Paternal | Maternal | Â | ||
| Â | <32 years | >32 years | <32 years | >32 years | Â |
Cases | 144 (76) | 76 (34.5) | 195 (88.5) | 25 (11.5) | 220 (100) |
Controls | 187 (85) | 33 (15) | 206 (93.5) | 14 (6.5) | 220 (100) |