Table.

Likelihood of IVF treatment discontinuation by woman’s characteristics and cycle outcome.

Predictor	Discontinuation after cycle 1		Discontinuation after cycle 2
	AOR (95%CI)*	p-value**	AOR (95% CI)*	p-value**
Cycle failure point
No oocyte retrieval	1.13 (0.77, 1.66)	0.54	0.65 (0.40, 1.05)	0.08
Failed fertilization	1.09 (0.72, 1.67)	0.68	1.29 (0.78, 2.13)	0.33
Failed implantation	1.00 (referent )		1.00 (referent )
Chemical pregnancy only	1.51 (1.04, 2.17)	0.03	1.09 (0.67, 1.76)	0.74
Clinical pregnancy loss	1.88 (1.22, 2.90)	<0.01	0.95 (0.52, 1.72)	0.86
Woman’s age at cycle start
20–34 years	1.00 (referent )		1.00 (referent )
35–39 years	0.85 (0.65, 1.12)	0.25	1.36 (0.98, 1.89)	0.07
40–49 years	1.12 (0.82, 1.52)	0.49	1.46 (1.01, 2.11)	0.05
Woman’s parity
No	1.00 (referent )		1.00 (referent )
Yes	1.58 (1.18, 2.10)	<0.01	1.66 (1.16, 2.37)	<0.01

^*Odds ratio (95% confidence interval) based on multivariate logistic regression including all variables shown, also controlling for study phase and study site. Cohort consisted of 2245 women commencing cycle 1.

^**Wald two-sided p-value.