Table 2.

Analysis of initial IVF cycle data between the two groups.

Variables	Total (n = 156)	Non-OSA Group (n = 98)	OSA Group (n = 58)	t	P
Duration of Gn used, d	10.6 ± 2.4	10.6 ± 2.4	10.7 ± 2.5	0.258	.797
Dosage of Gn used, U	1830.8 ± 807.4	1682.8 ± 619.9	2080.8 ± 1008.7	2.717	.008
Total number of oocytes retrieved, n	20.4 ± 9.6	21.9 ± 10.5	17.8 ± 7.2	−2.613	.010
No. of 2PN zygotes, n	11.6 ± 6.2	12.2 ± 6.8	10.5 ± 4.9	−1.849	.066
No. of cleavage, n	15.8 ± 7.8	16.9 ± 8.3	14.0 ± 6.4	−2.260	.025
No. of 2PN cleavage, n	11.3 ± 6.1	12.0 ± 6.6	10.1 ± 4.9	−2.041	.043
No. of high-quality embryos, n	5.6 ± 4.6	6.2 ± 4.6	4.5 ± 4.4	−2.185	.030
No. of available embryos, n	6.6 ± 4.9	7.4 ± 5.0	5.2 ± 4.3	−2.728	.007

Data are presented as means ± standard deviation. 2PN = two pronuclei, Gn = gonadotropin, IVF = in vitro fertilization, OSA = obstructive sleep apnea.