. Author manuscript; available in PMC: 2007 Dec 6.

Published in final edited form as: J Pediatr. 2007 Sep 17;151(5):528–531.e1. doi: 10.1016/j.jpeds.2007.04.031

Table 3.

Variables influencing uterine volume

Continuous independent variables
	R²	F-value	p
Age	0.24	5.08	0.027
Height	0.008	0.68	0.411
Weight	0.017	1.46	0.230
Body Surface Area	0.016	1.40	0.240
Age at Estrogen Exposure	0.022	1.85	0.177
Years of Estrogen Exposure	0.161	15.94	0.0001
Nominal Independent Variables
	Level	Volume (mL)
		Mean ± SD
History of GH Use	Yes (n=26)	18.3 ± 12.0	P=0.066
	No (n=60)	22.8 ± 12.3	P=0.066
Current HRT	Yes (n=69)	23.0 ± 12.6	P=0.0019
	No (n=17)	15.0 ± 8.6	P=0.0019
Spontaneous Menarche	Yes (n=13)	30.0 ± 16.9	P=0.014
	No (n=73)	19.9 ± 10.7	P=0.014
Type of Estrogen	E2 (n=10)	28.0 ± 10.0	E2 vs None, P=0.0015; E2 vs OC, P=0.045; CE vs None, P=0.0032
	CE (n=28)	25.0 ± 14.6
	OC (n=27)	19.7 ± 11.0
	None (n=20)	15.4 ± 8.6

E2 denotes estradiol, CE - conjugated estrogens, OC - oral contraceptives