Table 1 Demographic characteristics before and after matching

Variables

Day 3

Day 5

Day 3

Day 5

N=3172

N=955

p-val

N=577

N=577

p-val

Age (years)

32.89 ±3.57

31.61 ±3.60

<0.001

31.77 ±3.63

31.76 ±3.62

0.98

BMI (kg/m²)

21.78 ±3.14

22.09 ±3.53

0.02

22.20 ±3.27

22.11 ±3.51

0.64

Azoospermia (%)

3.6

1.9

0.01

2.8

2.3

0.71

PCOS (%)

0.7

2.8

<0.001

1.7

2.1

0.83

ICSI/IVF

1

2

<0.001

2

2

0.05

AMH (ng/ml)

1.87 ±2.51

4.35 ±4.04

<0.001

3.73 ±3.34

3.77 ±3.63

0.83

Gonal-F (%)

99.3

97.0

<0.001

97.2

97.6

0.85

Menotropin/rLH (%)

57.7

27.5

<0.001

27.0

29.6

0.36

Peak E2 (pg/ml)

1492.3 ±1059.9

3216.3 ±1685.0

<0.001

2488.8 ±1559.9

2512.9 ±1186.7

0.77

Total sperm count (/ml)

34.46 ±30.70

32.69 ±31.19

0.12

29.74 ±30.42

32.09 ±31.04

0.19

Sperm motility (%)

46.5

44.4

0.10

42.2

44.3

0.31

Normal sperm morphology (%)

7.2

6.6

0.05

6.0

6.2

0.64

Left duct

3

3

0.05

3

3

0.84

Right duct

3

3

0.007

3

3

0.43

No. follicles

11.96 ±9.47

21.89 ±9.47

<0.001

18.62 ±17.30

18.39 ±7.34

0.35

Day of trigger

12.14

11.97

0.21

12.02

12.07

0.79

No. oocytes retrieved

11.17 ±6.73

20.42 ±9.40

<0.001

17.34 ±7.77

17.13 ±7.37

0.39

No. mature oocytes

8.97 ±5.51

17.08 ±8.09

<0.001

14.36 ±6.36

14.14 ±6.19

0.32

No. embryos transferred

3.69 ±1.63

3.62 ±1.50

0.29

3.84 ±1.30

3.65 ±1.57

0.10

No. embryos frozen

0.51 ±1.43

2.24 ±3.37

<0.001

1.50 ±2.34

1.64 ±2.77

0.046

No. gestational sacs

0.70 ±1.04

0.84 ±1.16

<0.001

0.78 ±1.07

0.85 ±1.19

0.20

No. fetal heartbeats

0.65 ±1.07

0.75 ±1.14

0.001

0.72 ±1.04

0.76 ±1.16

0.37

Live Birth (%)

32.1

34.2

0.23

36.6

33.6

0.32