Parameter

synchronous

(n = 225) (40.3%)

Unsynchronized

(n = 130) (23.3%)

Mixed

(n = 203) (36.4%)

P

Women’s age (years)

(mean ± SD)

30.8 ± 5.5

30.2 ± 5.4

29.9 ± 5.1

NS

Primary infertility (%)

123 (55.2%)

69 (53.1%)

125 (61.9%)

NS

Cryopreservation of day 2 embryos (%)

202 (90.6%)

10 (7.7%)

128 (63.4%)

P < 0.0001

(S vs U) P < 0.0001

(S vs M) P < 0.0001

(U vs M) P < 0.0001

Number of cryopreserved/thawed embryo per cycle

(mean ± SD)

2.7 ± 1

3.0 ± 1.2

3.5 ± 1.2

P < 0.0001

(S vs U) P < 0.026

(S vs M) P < 0.0001

(U vs M) P < 0.0001

Number of transferred embryos

(mean ± SD)

2.0 ± 0.8

2.2 ± 1

2.5 ± 0.9

P < 0.0001

(S vs U) NS

(S vs M) P < 0.0001

(U vs M) P < 0.01