Table II.

Univariate and multivariate analysis of the association between live birth and clinical, sonographic and endocrinological parameters prior to start of ovarian stimulation, and type of gonadotrophin treatment in the entire group of normogonadotropic anovulatory patients (n = 335).

Parameter	Univariate			Multivariate
	OR	95% CI	P	OR	95% CI	P
Clinical
Female age (years)	0.91	0.84–0.98	0.015
BMI (kg/m2)	1.01	0.95–1.08	0.673
Waist-to-hip ratioa	1.15	0.90–1.48	0.271
Menstrual cycle pattern			0.022			0.040
Oligomenorrhea (reference)	1.00			1.00
Amenorrhea	0.69	0.32–1.47		0.63	0.32–1.22
Anovulatory cycles	0.33	0.15–0.73		0.45	0.23–0.88
Duration of infertility (years)	0.71	0.56–0.91	0.007	0.78	0.64–0.95	0.013
Previous pregnancy	0.77	0.43–1.41	0.402
Failure to conceive on CC	0.87	0.49–1.54	0.632
Failure to ovulate on CC	1.15	0.65–2.04	0.632
Sonographicb
Antral follicle count	1.01	0.99–1.03	0.209
Mean ovarian volume (cm3)	1.00	0.93–1.07	0.966
Endocrinologicalb
LH (IU/l)	1.00	0.94–1.07	0.895
FSH (IU/l)	0.83	0.69–0.99	0.034	0.86	0.74–1.01	0.062
Estradiol (pmol/l)c	0.92	0.83–1.02	0.111
Prolactin (μg/l)	1.01	0.98–1.03	0.696
Androstenedione (nmol/l)	0.99	0.92–1.07	0.818
Total testosterone (nmol/l)	0.91	0.57–1.44	0.678
SHBG (nmol/l)	1.01	1.00–1.01	0.142
Glucose, normald	2.16e	0.63–7.35e	0.219e
Insulin, normald	1.11e	0.59–2.08e	0.756e
Insulin-to-glucose ratio	0.94	0.83–1.07	0.331
Type of gonadotrophin
HP-FSH versus rFSHf	0.84	0.37–1.89	0.674
HP-hMG versus rFSHg	0.80	0.36–1.78	0.587

^aSteps of 0.1.

^bAt start of stimulation.

^cSteps of 25 pmol/l.

^dAs defined by central laboratory reference ranges.

^eNormal versus abnormal.

^fBalen et al. (2007).

^gPlatteau et al. (2006).