| Table 2. Implantation outcomes according to tertiles of blastocyst morphometric parameters, zona pellucida thickness, and age | ||||||
| Parameter | Tertile | N | Mean±SD | Range | Implantation n/N (%) | p |
|---|---|---|---|---|---|---|
| IBA (µm2) | Low | 274 | 7,984.3±1,157.4 | 17-9,726 | 110/274 (40.1%) | 0.313 |
| Medium | 274 | 10,803.9±635.8 | 9,727-11,873 | 118/274 (43.1%) | ||
| High | 274 | 14,542.9±3,241.6 | 11,874-26,845 | 127/274 (46.4%) | ||
| MXBA (µm2) | Low | 274 | 9,986.2±2,018.6 | 14-13,929 | 96/274 (35.0%) | 0.031 |
| Medium | 274 | 15,901.7±1,383.9 | 13,930-18,676 | 123/274 (44.9%) | ||
| High | 274 | 26,804.9±7,822.4 | 18,677-93,381 | 136/274 (49.6%) | ||
| IZP (µm) | Low | 274 | 10.1±1.3 | 1-12 | 113/274 (41.2%) | 0.892 |
| Medium | 274 | 13.6±0.8 | 13-15 | 114/274 (41.6%) | ||
| High | 274 | 18.2±2.8 | 16-28 | 109/274 (39.8%) | ||
| MZP (µm) | Low | 274 | 8.3±1.2 | 1-10 | 131/274 (47.8%) | 0.006 |
| Medium | 274 | 11.6±0.9 | 11-13 | 113/274 (41.2%) | ||
| High | 274 | 17.4±2.9 | 14-23 | 92/274 (33.6%) | ||
Initial blastocyst area (IBA); maximum blastocyst area (MXBA); delta blastocyst area (DBA); initial zona pellucida thickness (IZP); minimum zona pellucida thickness (MZP); delta zona pellucida thickness (DZP). Data are presented as mean±SD (range) within each tertile. Implantation is expressed as n/N (%). P values refer to chi-square tests across tertiles for each parameter. a≠b