Table 2

Comparisons of the annualised relapse rates in the 3 month period before IVF, after IVF and during a control period 1 year before IVF, in several groups of patients

Group	Control period (ARR)			Period before IVF (ARR)			Period following IVF (ARR)			p Value (1/3)	p Value (2/3)
Group	Mean	Median	Range	Mean	Median	Range	Mean	Median	Range	p Value (1/3)	p Value (2/3)
All IVF	0.68 (n=65)	0	0–4	0.80 (n=70)	0	0–4	1.60 (n=70)	0	0–8	0.04	0.01
IVF failure	0.82 (n=44)	0	0–4	0.98 (n=49)	0	0–4	1.96 (n=49)	0	0–8	0.08	0.02
IVF success	0.38 (n=21)	0	0–4	0.38 (n=21)	0	0–4	0.76 (n=21)	0	0–4	0.56	0.38
GnRH agonists	0.62 (n=45)	0	0–4	0.75 (n=48)	0	0–4	1.60 (n=48)	0	0–8	0.03	0.03
GnRH antagonists	0.63 (n=19)	0	0–4	0.84 (n=19)	0	0–4	0.84 (n=19)	0	0–4	0.77	1

All IVF, when all IVF procedures are taken into account; IVF failure, when there was a failure of IVF to induce a pregnancy; IVF success, when IVF was followed by a pregnancy; GnRH agonists/antagonists, in patients treated with GnRH agonists/antagonists for ovarian desensitisation.
Wilcoxon paired tests were performed to compare ARR between the different periods.
ARR, annualised relapse rates; GnRH, gonadotrophin releasing hormone; IVF, in vitro fertilisation.