Table 1.

Morphometric and menstrual cycle characteristics by evidence of luteal activity.¹

Determinant	Evidence of Luteal Activity (n = 9)	No Evidence of Luteal Activity (n = 3)	P Value2	Correlation with % Fat		Correlation with Fat Mass
				r	p	r	P
Age, years	6.82 (2.16)	8.05 (2.28)	0.41	0.37	0.24	0.45	0.14
Urinary Pdg, ug/mg Cr
Peak	0.56 (0.29)	0.35 (0.15)	0.27	0.03	0.92	0.01	0.99
Mean, luteal	0.35 (0.17)	n/a		−0.08	0.83	−0.05	0.90
Urinary E1c, ng/mg Cr
Peak	181.5 (90.3)	168.0 (95.3)	0.83	−0.23	0.47	−0.31	0.32
Mean, total cycle	90.0 (35.9)	61.5 (12.3)	0.22	−0.23	0.48	−0.29	0.35
Mean, follicular	95.4 (30.7)	n/a		−0.44	0.23	−0.46	0.21
Mean, luteal	85.7 (41.8)	n/a		−0.58	0.10	−0.61	0.08
Menstrual Cycle Parameters
Cycle length, days	29.6 (2.9)	31.3 (7.5)	0.56	−0.64	0.02	−0.53	0.08
Duration of menses, days	2.6 (0.7)	2.5 (0.8)	0.84	−0.24	0.45	−0.11	0.73
Bleeding score 3	1.84 (0.26)	1.64 (0.32)	0.30	0.44	0.15	0.50	0.10
Luteal length	12.7 (3.3)	n/a
Day of luteal transition	14 (1.9)	n/a
Body Weight, kg	5.0 (0.6)	4.3 (0.3)	0.09	0.72	0.01	0.77	0.003
Bone Mineral Density, g/cm3	0.32 (0.03)	0.31 (0.03)	0.55	0.64	0.02	0.79	0.002
Fat Mass, g	893.4(309.6)	567.2 (99.2)	0.12	0.96	0.0001
Percent Fat	17.5 (4.0)	13.2 (2.6)	0.12			0.96	0.0001

¹values presented as mean (standard deviation)

²comparison by evidence of luteal activity, t test

³0 (no bleeding), 1 (light), 2 (moderate), or 3 (heavy)