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The proportional change of normal morphology and abnormal morphology in each group Number of case(%)
| Group | n | Primordial follicles | Primary follicles | ||||
|---|---|---|---|---|---|---|---|
| Total | Normal | Abnormal | Total | Normal | Abnormal | ||
| Vitrification freezing group (A) | 18 | 113 | 90 (79.6) | 23 (20.4) | 33 | 17 (51.5) | 16 (48.5) |
| Programmed freezing group (B) | 18 | 102 | 76 (74.5) | 26 (25.5) | 36 | 12 (33.3) | 24 (66.7) |
| Fresh control group (C) | 18 | 128 | 112 (87.5) | 16 (12.5) | 31 | 24 (77.4) | 7 (22.6) |
| χ2 (P) | 6.434 (0.040) | 12.909 (0.002) | |||||
| P′ | 0.0167 | 0.0167 | |||||
