Table 4. Results of multiple binary logistic regression for predictors of implantation rate greater than 50% among patients who achieved clinical pregnancy (n=612).
Variable OR (IC 95% OR) p-value 95% CI Lower 95% CI Upper
AGE RANGE
≤ 35 years
From 36 to 40 years
> 41 years

0.287
1,000
0.310

<0,001
-
0.078

0.163
-
0.084

0.505
-
1.139
EMBRYO TRANSFER STAGE
Cleavage
Blastocyst


1,000


-


-


-
FREEZING TIME
0 to 90 days
91 to 180 days
181 to 360 days
> 360 days

1,000
1.259
0.951
0.879

-
0.496
0.911
0.768

-
0.648
0.393
0.375

-
2.445
2.301
2.063
NUMBER OF EMBRYOS TRANSFERED 0.065 <0.001 0.039 0.11