Table 2 Outcomes of controlled ovarian hyperstimulation
| Â | Controls | Canalization defect | Control | Unification defect | ||
|---|---|---|---|---|---|---|
No. of patients | 332 | 332 | Â | 533 | 533 | Â |
Stimulation type | Â | Â | 0.304 | Â | Â | 0.101 |
 Downregulation | 172 (51.8%) | 151 (45.5%) |  | 253 (47.5%) | 226 (42.4%) |  |
 Antagonist | 137 (41.3%) | 152 (45.8%) |  | 253 (47.5%) | 268 (50.3%) |  |
 Agonist | 23 (6.9%) | 28 (8.4%) |  | 27 (5.1%) | 36 (6.8%) |  |
 Microstimulation | 0 (0.0%) | 1 (0.3%) |  | 0 (0.0%) | 3 (0.6%) |  |
Total Gn dose (IU) | 2443.7 (1800,3431) | 2600 (1875,3450) | 0.324 | 2475 (1800, 3318) | 2475 (1800,3312.5) | 0.349 |
Total number of oocytes retrieved | 11 (7,14) | 11 (7,15) | 0.120 | 10 (6.5, 14) | 10 (7,14) | 0.134 |
IVF technique used | Â | Â | 0.002 | Â | Â | 0.000 |
 Classic IVF | 190 (57.2%) | 209 (63.0%) |  | 323 (60.0%) | 401 (75.2%) |  |
 ICSI | 139 (41.9%) | 108 (32.5%) |  | 207 (38.8%) | 119 (22.3%) |  |
 HALF | 3 (0.9%) | 15 (4.5%) |  | 3 (0.6%) | 13 (2.4%) |  |
Embryos/blastocysts transferred | Â | Â | 0.012 | Â | Â | 0.000 |
 Single cleavage embryo | 29 (8.7%) | 33 (9.9%) |  | 37 (6.9%) | 124 (23.3%) |  |
 Double cleavage embryos | 278 (83.7%) | 248 (74.7%) |  | 458 (85.9%) | 259 (48.6%) |  |
 Triple cleavage embryos | 11 (3.3%) | 29 (8.7%) |  | 11 (2.1%) | 127 (23.8%) |  |
 Single blastocyst | 10 (3.0%) | 4 (1.2%) |  | 19 (3.6%) | 7 (1.3%) |  |
 Double blastocysts | 4 (1.2%) | 18 (5.4%) |  | 8 (1.5%) | 16 (3.0%) |  |
High quality embryos (%)a | 1415 (93.4%) | 312 (95.2%) | 0.316 | 493 (93.4%) | 477 (92.1%) | 0.423 |