Table 1.
SSRs of babies from different patients with ART and birth types
| Total births | Male babies | Female babies | SSR(%) | |
|---|---|---|---|---|
| Infertility type | ||||
| Primary | 2674 | 1361 | 1313 | 50.90 |
| Secondary | 1159 | 580 | 579 | 50.04 |
| Infertility factor | ||||
| Male | 1532 | 766 | 766 | 50.00 |
| Female | 1462 | 747 | 715 | 51.09 |
| Both male and female | 548 | 276 | 272 | 50.36 |
| Unknown | 291 | 152 | 139 | 52.23 |
| Fertilization method | ||||
| IVF | 2290 | 1177 | 1113 | 51.40 |
| ICSI | 1276 | 611 | 665 | 47.88 |
| R-ICSI | 267 | 153 | 114 | 57.30 |
| Embryo transfer morphology | ||||
| Fresh | 834 | 430 | 404 | 51.56 |
| Thawed | 2999 | 1511 | 1488 | 50.38 |
| Birth type | ||||
| Singletons | 2147 | 1076 | 1071 | 50.12 |
| Twins | 1686 | 865 | 821 | 51.30 |
| Total | 3833 | 1941 | 1892 | 50.64 |