Table 2.

ROC analysis results of the laboratory variables in the diagnosis of CPP

Variables	Area	Standard error	p	95% confidence interval
				Lower limit	Upper limit
Basal LH (IU/L)	0.705	0.070	0.007	0.567	0.842
Basal FSH (IU/L)	0.763	0.061	0.001	0.644	0.882
Peak FSH (IU/L)	0.674	0.073	0.023	0.531	0.816
Basal LH/FSH	0.605	0.078	0.170	0.451	0.758
Peak LH/FSH	0.962	0.022	<0.001	0.920	1.000

FSH: follicle stimulatin hormone; LH: luteinizing hormone; ROC: receiver opertating characteristic; CPP: central precocious puberty