Table 2.

Cycle outcome variables in the control and index (uncleaved embryo) groups

	Control group (n = 140)	Index group (n = 70)	P valuec
No. oocytes	17.5 ± 6.4	20.6 ± 8.1	0.016
% MII oocytes/total	83.8 ± 14.3	84.2 ± 13.0	0.995
% Immature/totala	15.0 ± 13.0	13.4 ± 12.5	0.254
% Abnormal oocytes/total	1.06	1.67	0.107d
% Giant oocytes	0.33	0.76	0.092d
% Multi-cell oocytes	0.24	0.42	0.378d
% Fragmented oocytes	0.04	0.14	0.559d
% Degenerate/total	1.8 ± 3.8	1.4 ± 2.8	0.892
% 1PN/MII	3.8 ± 5.6	3.4 ± 5.0	0.703
% 2PN/MII	78.2 ± 14.0	80.1 ± 14.6	0.310
% 3PN/MII	4.3 ± 6.6	3.4 ± 5.7	0.484
No. good quality D3 embryosb	7.2 ± 3.2	6.8 ± 3.4	0.232
% Good quality D3 embryos/2PN	66.1 ± 18.2	52.4 ± 14.9	<0.001
No. D5 embryos frozen	4.1 ± 3.2	4.1 ± 3.7	0.491
% D5 embryos frozen (of 2PN)	35.2 ± 20.9	28.3 ± 19.8	0.030
No. embryos transferred	1.5 ± 0.6	1.6 ± 0.7	0.576
Total no. usable embryos (transferred and frozen)	5.6 ± 3.0	5.6 ± 3.6	0.599
% Transferred and frozen/2PN	50.8 ± 19.1	42.4 ± 18.0	0.005

^aImmature = no. of oocytes at germinal vesicle (GV) and metaphase I (MI) stages

^b ≥8 blastomeres with <10 % fragmentation on day 3

^cWilcoxon rank-sum test

^dFisher’s exact test