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Table 3 Factors associated with probability of contact in the study among unsuccessfully treated couples (n = 3,597)

From: Who does not participate in a follow-up postal study? a survey of infertile couples treated by in vitro fertilization

 

Multivariate analysis

 

OR

95% CI

P

Woman’s age (years)

  

<0.001*

 < 30

1

  

 30-34

1.46

1.21-1.77

 

 35-39

1.50

1.23-1.83

 

 ≥ 40

1.69

1.33-2.15

 

Inclusion center

  

<0.001

 Marseille

1

  

 Bois-Guillaume

0.79

0.63-0.97

 

 Sèvres

1.06

0.83-1.37

 

 Besançon

0.99

0.76-1.30

 

 Caen

1.83

1.40-2.41

 

 Cochin

1.07

0.82-1.39

 

 Clermont-Ferrand

1.18

0.89-1.56

 

 Montsouris

1.56

1.18-2.05

 

Year of 1st oocyte retrieval

  

<0.001*

 2000

1

  

 2001

1.13

0.94-1.35

 

 2002

1.43

1.19-1.72

 

Origin of infertility

  

0.206

 Female

1

  

 Male

1.03

0.97-1.23

 

 Couple

0.90

0.74-1.09

 

 Unexplained

0.83

0.67-1.04

 

Number of embryos obtained at 1st attempt

  

0.009*

 0-1

1

  

 2-5

1.10

0.93-1.31

 

 > 5

1.29

1.06-1.55

 

Number of attempts

  

<0.001*

 1

1

  

 2-4

1.59

1.37-1.84

 

 >4

3.76

2.78-5.08

 
  1. * P for trend.