Table 2.

Mean, standard deviation, ICC and SEM comparing month to month consistency in absolute nadir (from the 6 days of menses) and peak (from the 8 post ovulatory days) sex hormone concentrations for all subjects and with anovulatory cycles removed.

	Cycle 1 Mean (SD)	Cycle 2 Mean (SD)	ICC	SEM
All Subjects (N=60)
Nadir (Menses) Values
Estradiol (pg/ml)	37.5 (14.0)	35.4 (15.2)	0.58	9.8
Progesterone (ng/ml)	0.6 (0.3)	0.6 (0.3)	0.67	0.2
Testosterone (ng/dL)	22.6 (11.4)	20.2 (10.2)	0.60	7.2
SHBG (nmol/l)	60.8 (24.2)	62.9 (23.6)	0.88	8.4
FAI	1.3 (0.9)	1.1 (0.8)	0.78	0.4
Peak (Post Ovulatory) Values
Estradiol (pg/ml)	208.7 (92.5)	209.0 (111.2)	0.56	73.6
Progesterone (ng/ml)	14.6 (7.8)	13.9 (7.9)	0.44	5.9
Testosterone (ng/dL)	49.2 (17.4)	48.7 (19.6)	0.71	10.5
SHBG (nmol/l)	80.0 (30.1)	80.9 (33.8)	0.89	11.4
FAI	2.9 (1.6)	2.8 (1.5)	0.82	0.7
Ovulatory Cycles Only (N=49)
Nadir (Menses) Values
Estradiol (pg/ml)	36.0 (12.7)	34.3 (14.7)	0.48	10.6
Progesterone (ng/ml)	0.6 (0.3)	0.6 (0.2)	0.66	0.2
Testosterone (ng/dL)	22.6 (10.9)	21.0 (9.7)	0.60	6.9
SHBG (nmol/l)	59.5 (23.6)	60.7 (22.2)	0.86	8.7
FAI	1.3 (0.9)	1.2 (0.8)	0.82	0.4
Peak (Post Ovulatory) Values
Estradiol (pg/ml)	214.1 (83.1)	211.1 (95.3)	0.38	74.8
Progesterone (ng/ml)	16.5 (6.7)	15.7 (6.5)	0.41	5.1
Testosterone (ng/dL)	48.5 (16.7)	46.6 (15.6)	0.73	8.6
SHBG (nmol/l)	77.7 (28.4)	78.0 (31.5)	0.87	11.3
FAI	3.0 (1.7)	2.9 (1.6)	0.85	0.7