Table 5 The comparisons of clinical characteristics between fresh and frozen embryo transfer groups stratified by age
From: Chromosomal analysis of 262 miscarried conceptuses: a retrospective study
Maternal age | < 35 | ≥ 35 | |||||
|---|---|---|---|---|---|---|---|
Fresh embryo transfer | Frozen embryo transfer | P | Fresh embryo transfer | Frozen embryo transfer | P | ||
History of pregnancy loss | Sporadic | 27(81.8%) | 56(68.3%) | 0.143 | 14(70%) | 13(44.8%) | 0.082 |
Recurrent | 6(18.2%) | 26(31.7%) | 6(30%) | 16(55.2%) | |||
Gestational age (weeks) | < 12 | 30(93.8%) | 78(95.1%) | 1 | 19(95%) | 28(96.6%) | 1 |
≥ 12 | 2(6.3%) | 4(4.9%) | 1(5%) | 1(3.4%) | |||
Abnormality of chromosomes | Yes | 25(75.8%) | 27(32.9%) | 0.0001 | 17(85%) | 13(44.8%) | 0.005 |
No | 8(24.2%) | 55(67.1%) | 3(15%) | 16(55.2%) | |||
Type of chromosomal abnormality | No | 8(24.2%) | 55(67.1%) | 0.0001 | 3(15%) | 16(55.2%) | 0.004 |
Structural | 12(36.4%) | 8(9.8%) | 2(10%) | 0 | |||
Numerical | 13(39.4%) | 19(23.2%) | 15(75%) | 13(44.8%) | |||
Type of structural abnormality | Del | 4(33.3%) | 6(75%) | 0.107 | 0 | 0 | |
Dup | 6(50%) | 2(25%) | 2 | 0 | |||
Del and Dup | 2(16.7%) | 0 | 0 | 0 | |||