Table 1.
The overall ART profiles of 43 972 female patients.
| Number of women | 43 972 |
| Female age (years) | 32 (29, 35) |
| Duration of infertility (years) | 3 (1, 5) |
| Infertility type (n, %) | |
| Primary infertility | 23 306 (53.00%) |
| Secondary infertility | 20 666 (47.00%) |
| Body mass index (kg/m2) | 21.48 (19.72, 23.63) |
| Number of IVF/ICSI cycles | 86 496 |
| IVF | 49 248 (56.94%) |
| ICSI | 28 795 (33.29%) |
| IVF+ICSI | 6460 (7.47%) |
| Unknown | 1993 (2.30%) |
| Number of women having different oocyte retrieval cycles | |
| 1 | 25 788 (58.65%) |
| 2 | 9046 (20.57%) |
| 3 | 3856 (8.77%) |
| 4 | 2090 (4.75%) |
| ≥5 | 3192 (7.26%) |
| Number of FET cycles | 82 022 |
| Number of women having different FET cycles | |
| 1 | 21 890 (49.78%) |
| 2 | 12 727 (28.94%) |
| 3 | 5560 (12.64%) |
| 4 | 2225 (5.06%) |
| ≥5 | 1570 (3.57%) |
| Median time duration of women having different FET cycles (months) | |
| 1 | 3.83 (2.50, 6.09) |
| 2 | 8.63 (5.53, 15.47) |
| 3 | 16.10 (10.49, 28.05) |
| 4 | 23.60 (16.07, 38.34) |
| ≥5 | 37.31 (25.98, 53.93) |
Numbers are mean (interquartile range, IQR) for continuous parameters and n (%) for categorical parameters. Median time duration of women having different FET cycles, the average duration between the date of the last embryo transfer and the date of the first oocyte retrieval, plus the cycle treatment time for the initial oocyte pick-up cycle.
FET, frozen embryo transfer.