Table 3.
Risk of a balanced chromosomal aberration in maternal age groups in relation to family history of recurrent miscarriage and number of previous miscarriages (adapted from Franssen et al., 2005 [35]).
| At least two miscarriages in family members | Risk of balanced chromosomal aberration (%) according to no. of previous miscarriages | |||
| Maternal age (years) | Sibling | Parent | ≥3 | 2 |
| <23 | + | + | 10.2 | 7.3 |
| + | – | 7.3 | 5.2 | |
| – | + | 5.7 | 4.0 | |
| – | – | 4.1 | 2.8 | |
| 23–33 | + | + | 10.0 | 7.2 |
| + | – | 7.2 | 5.1 | |
| – | + | 5.7 | 4.0 | |
| – | – | 4.0 | 2.8 | |
| 34–36 | + | + | 5.8 | 4.1 |
| + | – | 4.1 | 2.9 | |
| – | + | 3.2 | 2.2 | |
| – | – | 2.2 | 1.6 | |
| 37–38 | + | + | 4.0 | 2.8 |
| + | – | 2.8 | 2.0 | |
| – | + | 2.2 | 1.5 | |
| – | – | 1.5 | 1.1 | |
| ≥39 | + | + | 1.8 | 1.2 |
| + | – | 1.3 | 0.9 | |
| – | + | 1.0 | 0.7 | |
| – | – | 0.7 | 0.5 | |