Table 3.

Multivariate regression analysis of general characteristics as well as preovulatory and periovulatory characteristics on Outcomes 3 and 4 of the luteal phase characteristics.

Characteristics	Normal then low PDG during the luteal phase				Low then normal PDG during the luteal phase
	Without adjustment	Adjusted for general characteristics	Adjusted for preovulatory characteristics	Adjusted for periovulatory characteristics	Without adjustment	Adjusted for general characteristics	Adjusted for preovulatory characteristics	Adjusted for periovulatory characteristics
GENERALa
Body mass index								0.85 (0.74, 0.98)
								[5.38; 0.02]
PREOVULATORYb
Early follicular phase PDG				0.16 (006, 0.43) [13.64; 0.000]c	0.4 (0.22, 0.76) [8.56; 0.003]	0.37 (0.18, 0.74) [8.83; 0.003]	0.4 (0.22, 0.76) [8.56; 0.003]
				$\left[13.64;0.000\right]$c	[8.56; 0.003]	[8.83; 0.003]	[8.56; 0.003]
PERIOVULATORYd
Small max. follicle size	3.21 (1.50, 6.87)	3.75 (1.63, 8.61)	3.21 (1.50, 6.87)	2.71 (1.24, 5.92)
Small max. follicle size	[8.82; 0.003]	[9.63; 0.002]	[8.82; 0.003]	[6.11; 0.01]
Periovulatory phase PDG	3.39 (1.55, 7.4)	2.96 (1.34, 6.55)	3.39 (1.55, 7.4)	3.39 (1.55, 7.4)	0.24 (0.12, 0.48	0.18 (0.08, 0.4)	0.24 (0.12, 0.48)	0.24 (0.12, 0.48)
	[10.08; 0.001]	[7.79; 0.005]	[10.08; 0.001]	[10.08; 0.001]	[19.58; 0.000]	[22.53; 0.000]	[19.58; 0.000]	[19.58; 0.000]

^aThe five general characteristics tested were: age, age at menarche, body mass index, sports activity, regular smoking.

^bThe five preovulatory characteristics tested were: preovulatory phase length and early follicular phase E1G, PDG, LH, and FSH levels.

^cThe values shown (red text) are the statistically significant ORs (95% confidence intervals) and [LR; p-value].

^dThe five periovulatory characteristics tested were: small maximum follicle size and periovulatory phase E1G, PDG, LH, and FSH levels.