| Number of abortion | couples | carriers |
Group 1 | 2 | 57 (23.95%) | 3/57 (5.26%) |
Group 2 | 3 | 79 (33.19%) | 4/79 (5.06%) |
Group 3 | ≥4 | 102 (42.85%) | 6/102 (5.88%) |