| Subgroup |
Number |
Expected
numbe |
Chi-
square |
P value |
Child age at
diagnosis |
|
|
0.22 |
0.90 |
| <3 years |
28 |
26.5 |
|
|
| 3-5 years |
14 |
15.4 |
|
|
| ≥6 years |
11 |
11.3 |
|
|
| Number in birth |
|
|
2.85 |
0.09 |
| Singletons |
28 |
33.9 |
|
|
| Multiples |
25 |
19.1 |
|
|
| IVF method |
|
|
0.02 |
0.89 |
| Standard IVF |
38 |
37.5 |
|
|
| ICSI |
15 |
15.5 |
|
|
|