no difference was detected between the groups in peak e2 levels ( 828 +/- 78 versus 819 +/- 79 in the hmg and hfsh groups , respectively ) , day of human chorionic gonadotropin ( hcg ) administration ( 9.3 +/- 0.3 versus 9.7 +/- 1.01 ) , occurrence of spontaneous luteinizing hormone ( lh ) surge ( 44 % versus 27 % , p greater than 0.05 , chi square analysis ) , average number of ova recovered ( 5.0 +/- 0.7 versus 5.6 +/- 1 ) , ova maturation ( 7.5 % versus 12.7 % rate of immature ova ) , rate of normal and abnormal fertilization ( 9.2 % versus 8.1 % polyspermic fertilization ) , cleavage stage at transfer ( 3.6 +/- 0.4 versus 3.4 +/- 0.7 cells per embryos ) , the number of embryos transferred ( 2.5 +/- 0.3 versus 2.6 +/- 0.3 ) , or the occurrence of pregnancy ( 1 in the hmg group and 2 in the hfsh group ) .
C0015914
fertilization
C0032961
pregnancy