Table 1.
Sample descriptives
| DNA methylation from cord blood | DNA methylation at age 7 | DNA methylation at age 17 | ||
|---|---|---|---|---|
| PEs at age 12 (n) | 833 | 900 | 899 | |
| PEs at age 18 (n) | 739 | 791 | 787 | |
| Characteristic | n | % | (missing n ) | |
| PEs at age 12 | 116 | 12.5 | 69 | |
| PEs at age 18 | 72 | 8.8 | 182 | |
| Parity | 35 | |||
| 0 | 451 | 46.8 | ||
| 1 | 358 | 37.2 | ||
| 2 | 117 | 12.1 | ||
| 3 | 37 | 3.8 | ||
| Maternal age | Mean = 29.5 | sd = 4.4 | 6 | |
| Maternal smoking | 18 | |||
| Never | 847 | 86.4 | ||
| Stopped during pregnancy | 36 | 3.7 | ||
| Continued throughout pregnancy | 97 | 9.9 | ||
| Infections during pregnancy | 445 | 44.6 | ||
| Caesarean section delivery | 92 | 9.6 | 40 | |
| Sex (male) | 485 | 48.6 |
PEs psychotic experiences