Table 2 Cycles outcome according to oocyte yield in women who underwent mIVF

# Mature (MII) oocytes

142

551

326

# Fertilized oocytes (% fertilization rate)

1.4 ± 0.07 (32.1) ^a

3.4 ± 0.1 (68.1) ^b

7.6 ± 0.4 (80.7)^c

<0.0001

# Blastocysts formed per patient (% blastocyst formation rate)

1.2 ± 0.06 (78.4) ^a

2.6 ± 0.1 (57.0) ^b

5.5 ± 0.4 (42.6) ^c

<0.0001

# Blastocysts vitrified

0 ^a

50 ^b

28 ^c

<0.0001

Total number of blastocysts transferred in each group

73 ^a

186 ^b

63 ^c

0.01

% Transferred blastocysts from all vitrified blastocysts

100 ^a

68.1 ^b

80.7 ^b

<0.0001

Miscarriages

17

48

19

0.8

Cumulative clinical pregnancy rate over 6 month period

48 (51.6)

68 (50.0)

15 (42.8)

0.7

Cumulative live birth rate over 6 month period

43^d (46.2)

51^e (37.5)

14^f (40.0)

0.6