Table 2 Characteristics of the parents
Parents’ characteristics | the Netherlands (n = 10) | France (n = 15) | Total (n = 30) |
|---|---|---|---|
Sex | |||
  Male, n (%) | 0 (0) | 3 (37.5) | 3 (16.7) |
  Female, n (%) | 10 (100) | 5 (62.5) | 15 (83.3) |
Age (years), mean (SD) | 45.6 (5.2) | 45.3 (5.1) | 45.4 (5.2) |