Table 3 Comparisons between the donors achieving pregnancy and the others

Number of oocyte donors

85

60

Age (years)^a

31 [23–37]

32 [24.9–37]

0.425

BMI ≥ 25

27.1 %

45.7 %

0.064

Smokers

37.3 %

37.5 %

0,897

Number of recipients per donor^a

3 [1–3]

2 [1–4]

0,001

Child number of the donor^a

2 [1–4]

1.9 [1–3.55]

0.096

AMH (ng/mL)^a

4,48 [2.23–9.96]

3.15 [1.65–8.6]

0,001

Antral follicle count (sum of both ovaries)

20 [11–49]

19 [10–36]

0.095

Number of mature follicles^b

16.6 ± 7.4

11.5 ± 5.2

<0.001

Duration of stimulation (days)^b

12.1 ± 1.7

12.4 ± 1,8

0.26

Estradiol on the trigger day (pg/mL)^b

2429 ± 1136

1694 ± 10.1

<0.001

Total dose of gonadotropins (UI)^b

2650 ± 856

3315 ± 959

<0.001

Number of mature oocytes^b

11.3 ± 6.1

7.2 ± 4.9

<0.001

Number of embryos^b

7.5 ± 4.2

4 ± 3.2

<0.001