| Table 3. Factors associated with the occurrence of clinical pregnancy evaluated by binary logistic regression model. | |||
| Variable | Implantation rate | p-value | |
|---|---|---|---|
| Up to50% (n=451) |
> 50% (n=161) |
||
| n (%) | n (%) | ||
| AGE RANGE ≤ 35 years From 36 to 40 years ≥ 41 years |
231 (51.2) 148 (32.8) 72 (16.0) |
93 (57.8) 65 (40.4) 3 (1.9) |
<0.001Q |
| EMBRYO TRANSFER STAGE Cleavage Blastocyst |
310 (68.7) 141 (31.3) |
40 (24.8) 121 (75.2) |
<0.001Q |
| FREEZING TIME 0 to 90 days* 91 to 180 days 181 to 360 days* > 360 days* |
252 (55.9) 77 (17.1) 52 (11.5) 70 (15.5) |
110 (68.3) 26 (16.1) 12 (7.5) 13 (8.1) |
0.019Q |
| NUMBER EMBRYOS TRANSFER 1 2 3 4 |
0 (0.0) 312 (93.1) 115 (84.6) 25 (96.2) |
116 (100.0) 23 (6.9) 21 (15.4) 1 (3.8) |
<0.001W |
Q Chi-square test, W Wilcoxon Mann-Whitney test.
* Statistically significant difference in implantation rate compared to the 0-90 days group (Tukey post hoc test, p<0.05).