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Comparison of birthweights between the cleavage‐stage embryos and blastocysts in different cycle regimens
| Stage | Cycle | N (%) | Birthweight |
|---|---|---|---|
| Cleavage | HRT | 38 (9.4) | 3082.4 ± 287.7 |
| OVL | 30 (25.6) | 2959.3 ± 411.4 | |
| Blastocyst | HRT | 368 (90.6) | 3138.3 ± 382.4a |
| OVL | 87 (74.4) | 3009.9 ± 260.1b |
HRT, Hormone replacement therapy; OVL, ovulatory.
Values are expressed as the mean ± standard deviation.
a vs b, P < .01.
