Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Characteristics of infants conceived after vitrified-warmed blastocyst transfer according to the day (after oocyte retrieval) on which blastocysts were vitrified
| Day of vitrification | 5 | 6 | 7 |
|---|---|---|---|
| No. of live born | 47 | 26 | 8 |
| No. of male (%) | 26 (55.3) | 16 (61.5) | 6 (75.0) |
| No. of female (%) | 21 (44.7) | 10 (38.5) | 2 (25.0) |
| Mean gestational age (wk) ± SD | 38.4 ± 2.0 | 38.6 ± 2.0 | 39.4 ± 2.0 |
| Preterm (<37 wk) (%) | 7 (17.1) | 4 (17.4) | 1 (14.2) |
| Mean birth weight (g) ± SD | 2944 ± 535 | 2897 ± 426 | 3088 ± 270 |
| Twins | 6 | 3 | 1 |
