Table I.
Patient and treatment characteristics.
| Characteristics | Variables | G2+: Low HA | EmbryoGlue®: HA-rich medium | |
|---|---|---|---|---|
| Treatment and HA exposure time | In situ (untreated) | Long HA exposure (2–4 h) | Short HA exposure (10–30 min) | |
| No. ET procedures | 1018 | 1198 | 1175 | |
| Female age (years) | <35 | 631 (62.0%) | 789 (65.9%) | 754 (64.2%) |
| 35–37 | 212 (20.8%) | 228 (19.0%) | 233 (19.8%) | |
| 38–39 | 144 (14.1%) | 152 (12.7%) | 154 (13.1%) | |
| 40–42 | 31 (3.0%) | 29 (2.4%) | 34 (2.9%) | |
| No. prior IVF/ICSI cycles | 1st | 663 (65.1%) | 851 (71.0%) | 878 (74.7%) |
| 2nd | 296 (29.1%) | 270 (22.5%) | 251 (21.4%) | |
| 3rd + | 59 (5.8%) | 77 (6.4%) | 46 (3.9%) | |
| Type of treatment | ICSI | 625 (61.4%) | 708 (59.1%) | 684 (58.2%) |
| IVF | 393 (38.6%) | 490 (40.9%) | 491 (41.8%) | |
| Type of incubator | Box | 336 (33.0%) | 340 (28.4%) | 3 (0.3%) |
| Box + K-system | 256 (25.1%) | 156 (13.0%) | 0 (0.0%) | |
| K-system | 426 (41.8%) | 613 (51.2%) | 449 (38.2%) | |
| Embryoscope | 0 (0.0%) | 89 (7.4%) | 723 (61.5%) | |
| Embryo stage at ET | Day 2 | 241 (23.7%) | 264 (22.0%) | 287 (24.4%) |
| Day 3 | 571 (56.1%) | 545 (45.5%) | 496 (42.2%) | |
| Day 5 | 206 (20.2%) | 389 (32.5%) | 392 (33.4%) | |
| No. embryos transferred | SET | 388 (38.1%) | 450 (37.6%) | 457 (38.9%) |
| DET | 630 (61.9%) | 748 (62.4%) | 718 (61.1%) | |
DET, double embryo transfer; ET, embryo transfer; HA, hyaluronic acid; SET, single embryo transfer.