Table 1 Patient characteristics

Number of patients

410

336

74

Age (years)^a

31.7 ± 5.3

31.7 ± 5.2

31.7 ± 5.5

Body mass index (kg/m²)^a

24.6 ± 5.5

24.6 ± 5.6

24.0 ± 5.5

Tubal factor^b

75 (18.3)

60 (17.9)

15 (20.3)

Male factor^b

285 (69.5)

229 (68.2)

56 (75.7)

Endometriosis^b

69 (16.8)

58 (17.3)

11 (14.9)

Polycystic ovary syndrome^b

44 (10.7)

34 (10.1)

10 (13.5)

Idiopathic infertility^b

9 (2.2)

5 (1.5)

4 (5.4)

Number of retrieved oocytes^a

4.8 ± 3.3

4.5 ± 3.1

5.0 ± 3.5

Length of stimulation (days)^a

11 (10–12)

11 (10–12)

11 (10–12)

ICSI^b

145 (35.4)

112 (33.3)

30 (40.5)

Ongoing pregnancy rate^b

112 (27.3)

84 (25.0)

28 (37.8)

Live birth rate^b

98 (23.9)

64 (19.0)

24 (32.4)