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Table 1 Characteristics of study population at the first aspiration ( N= 3,002)

From: Joint modeling of success and treatment discontinuation in in vitrofertilization programs: a retrospective cohort study

 

Parisian center (Cochin)

Medium-sized city center (Clermont-Ferrand)

P*

 

n=1,556 (%)

n=1,446 (%)

 

Patient age (years)

  

<0.001

  17-24

2

3

 

  25-29

21

27

 

  30-34

39

41

 

  35-39

29

23

 

  ≥ 40

9

6

 

Technique

  

<0.001

  IVF

48

61

 

  ICSI

52

39

 

Oocytes retrieved

  

0.054

  0

1

2

 

  1-6

34

35

 

  7-15

50

47

 

  16-60

15

16

 

Fresh embryos transferred

  

<0.001

  0

13

13

 

  1

10

13

 

  2

65

52

 

  3-5

12

22

 

Embryos frozen

  

<0.001

  0

49

70

 

  1-2

21

13

 

  3-21

30

18

 
  1. * p-value for the chi2 test comparing the women’s characteristics according to inclusion center.