Table 1.
Characteristics of the parental population
| Father | Mother | |
| N | 1398 a | 1411 |
| Age (years) | 38.8 ± 6.0 b | 33.8 ± 5.0 |
| Education | ||
| University | 14.9 (201) c | 17.7 (239) |
| Intermediate | 14.4 (194) | 14.9 (201) |
| High school | 55.3 (746) | 59.5 (803) |
| Primary or none | 15.4 (207) | 7.9 (107) |
| Residence | ||
| Urban | 34.7 (493) | |
| Semi Urban | 9.9 (141) | |
| Rural | 55.4 (786) | |
| Nationality | ||
| Both Greek | 86.3 (1226) | |
| One parent Greek | 5.7 (81) | |
| Both non Greek | 8.0 (113) | |
a. Although there where 1420 answered questionnaires, the differences between 1398 and 1411 were due to single parent families (17 in total)
b. The values are given as mean ± standard deviation [Student t test – equal variances not assumed] p < 0.001
c. The values are given as total % (N) [Chi-square test (χ2)] p < 0.001