Table 2.
Laboratory screening and ultrasonography findings in two groups
| Group | IVF pregnancyn=300 | Normal pregnancyn=700 | P value |
|---|---|---|---|
| PAPPA levels (mIU/mL) | 3.75 ± 0.090 | 4.10 ± 2.251 | 0.026 |
| β-hCG titrate(mIU/mL) | 44.07 ± 31.366 | 37.28 ± 23.787 | 0.030 |
| PAPPA (MOM) | 1.19 ± 0.772 | 1.63 ± 4.375 | 0.167 |
| β-hCG (MOM) | 2.23 ± 2.367 | 1.67 ± 2.097 | 0.003 |
| NT (mm) | 1.54 ± 4.643 | 1.30 ± 1.004 | 0.235a |
| CRL (mm) | 56.93 ± 7.552 | 57.55 ± 7.142 | 0.417a |
Values are given as mean ± SD. a; Independent t test was used to compare different variables between the two groups, IVF; In vitro fertilization, PAPPA; Pregnancy-associated plasma protein-A, β-hCG; Beta-human chorionic gonadotropin, NT; Nuchal translucency, and CRL; Crown-rump length.