Table 3. Logistic regression analysis to predict the positive results of the gonadotropin-releasing hormone stimulation test.

Variable	Odds ratio	95% Confidence interval	P value
Uterine length (cm)	2.14	1.15-3.96	0.013
Uterine transverse diameter (cm)	11.64	2.98-45.40	<0.001
Fundus (cm)	5.86	1.92-17.83	0.001
Uterine volume (cm3)	2.52	1.51-4.19	<0.001
Uterine cross-sectional area (cm2)	2.91	1.70-5.00	<0.001