Table 3 The univariate and multivariate logistic regression analysis for factors associated pregnancy outcomes in the training cohort (N = 1853)
From: Nomogram prediction for the prediction of clinical pregnancy in Freeze-thawed Embryo Transfer
Characteristic | Univariable | Multivariable | ||
|---|---|---|---|---|
OR (95% CI) | P value | OR (95% CI) | P value | |
Female age (years) | 0.93 (0.91, 0.96) |  < 0.0001 | 0.96 (0.93, 0.99) | 0.0221 |
FET protocols, n(%) | ||||
 Artificial cycle | 1.0 | - | 1.0 | - |
 Natural cycle | 0.80 (0.59, 1.07) | 0.1299 | 0.84 (0.61, 1.16) | 0.2975 |
BMI (kg/m2) | 1.02 (1.00, 1.05) | 0.0637 | 1.04 (1.01, 1.07) | 0.0046 |
Type of infertility, n(%) | ||||
 Primary infertility | 1.0 | - | 1.0 | - |
 Secondary infertility | 0.84 (0.69, 1.01) | 0.0687 | 0.94 (0.75, 1.18) | 0.5851 |
Duration of infertility (years) | 0.98 (0.95, 1.01) | 0.1104 | 0.99 (0.95, 1.02) | 0.4431 |
Infertility diagnosis, n(%) | ||||
 Female factor | 1.0 | - | 1.0 | - |
 Male factor | 1.38 (1.01, 1.87) | 0.0402 | 1.39 (0.99, 1.94) | 0.0542 |
 Multiple factors | 1.06 (0.85, 1.33) | 0.6161 | 1.14 (0.89, 1.46) | 0.2993 |
 Unexplained and other | 0.98 (0.58, 1.66) | 0.9390 | 1.05 (0.59, 1.85) | 0.8742 |
AMH (ng/ml) | 1.05 (1.02, 1.09) | 0.0012 | 1.02 (0.98, 1.06) | 0.3020 |
Baseline FSH (IU/L) | 0.94 (0.90, 0.98) | 0.0048 | 1.00 (0.95, 1.05) | 0.9309 |
Type of embryos transferred, n(%) | ||||
 Cleavage embryo | 1.0 | - | 1.0 | - |
 Blastocyst | 1.71 (1.41, 2.07) |  < 0.0001 | 1.95 (1.50, 2.55) |  < 0.0001 |
No. of embryos transferred, n(%) | ||||
 1 | 1.0 | - | 1.0 | - |
 2 | 1.01 (0.82, 1.25) | 0.9294 | 1.63 (1.22, 2.18) | 0.0008 |
Endometrial thickness (cm) | 3.38 (2.14, 5.33) |  < 0.0001 | 2.61 (1.57, 4.35) | 0.0002 |
Endometrial pattern, n (%) | ||||
 Type A | 1.0 | - | 1.0 | - |
 Type non-A | 0.96 (0.79, 1.18) | 0.7183 | 1.00 (0.80, 1.24) | 0.9695 |
No. of Sub-endometrial blood, n (%) | ||||
 A | 1.0 | - | 1.0 | - |
 B | 5.23 (3.07, 8.91) |  < 0.0001 | 4.276(2.42, 7.50) |  < 0.0001 |
 C | 12.49 (7.22, 21.61) |  < 0.0001 | 8.55 (4.65, 15.73) |  < 0.0001 |
VI | 1.09 (1.06, 1.13) |  < 0.0001 | 1.02 (0.99, 1.06) | 0.1959 |
FI | 1.05 (1.03, 1.07) |  < 0.0001 | 1.04 (1.01, 1.06) | 0.0010 |
Endometrial blood flow classification, n (%) | ||||
 I | 1.0 | - | 1.0 | - |
 II | 1.57 (1.11, 2.23) | 0.0116 | 0.78 (0.52, 1.16) | 0.2132 |
 III | 4.30 (2.01, 9.21) | 0.0002 | 1.95 (0.85, 4.46) | 0.1146 |
RI | 0.08 (0.03, 0.25) |  < 0.0001 | 0.01 (0.00, 0.08) |  < 0.0001 |
PI | 0.69 (0.44, 1.08) | 0.1024 | 3.98 (1.42, 11.14) | 0.0087 |