Table I.
Baseline characteristics of couples in RCT of conventional versus increased concentration sucrose in freezing and thawing solutions for human embryos.
| Embryos frozen in a medium containing |
||
|---|---|---|
| 0.1 M sucrose (control) | 0.3 M sucrose (intervention) | |
| Number of couples (n) | 99 | 102 |
| Female age in years; mean (SD) | 34.3 (3.7) | 34.3 (3.8) |
| Number of parous women (%) | 11 (11%) | 4 (4%) |
| Couple's diagnosis (%): | ||
| Male factor only | 21 (21 %) | 35 (34%) |
| Female factor only | 67 (68%) | 55 (54%) |
| Both | 11 (11%) | 12 (12%) |
| Treatment (%): | ||
| IVF | 73 (74%) | 72 (71%) |
| ICSI | 21 (21%) | 28 (27%) |
| IVF and ICSI | 5 (5%) | 2 (2%) |
| Median (IQRa) number of oocytes per patient: | ||
| Collected | 11 (8, 14) | 10 (8, 13) |
| Inseminated | 10 (8, 14) | 9 (7, 12) |
| Fertilized normallyb | 7 (5, 10) | 7 (5, 9.25) |
| Median (IQR) number of embryos frozen per patient | 4 (3, 6) | 4 (3, 6) |
| Quality score at freezing: | ||
| Median (IQR) proportion of embryos with optimal number of cells at freezing | 50 (20, 80) | 50 (23.75, 75) |
aInterquartile range.
bTwo pronuclei and two polar bodies.