Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Variables in the probability of pregnancy
| Model and parameters | Chi-square | Degrees of freedom | Significance | Area under ROC curve | Correct predictions (%) | Positive predictive value (%) | Negative predictive value (%) |
|---|---|---|---|---|---|---|---|
| Model | 33.34 | 3 | p < 0,001 | 0.825 | 75 | 68.9 | 80.0 |
| Antral follicle count | 24.37 | 1 | p < 0,001 | 0.771 | 75 | 62.2 | 85.5 |
| Estradiol fourth day | 19.48 | 1 | p < 0,001 | 0.741 | 67 | 48.9 | 81.8 |
| FSH third day | 11.20 | 1 | p = 0,001 | 0.705 | 63 | 46.7 | 76.4 |
| Age | 10.02 | 1 | p = 0,002 | 0.680 | 63 | 46.7 | 76.4 |
