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Table 4 Factors associated with probability of response to the postal questionnaire among unsuccessfully treated couples ( n= 2,152)

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

1.48

1.15-1.90

 

 35-39

1.01

0.78-1.31

 

 ≥ 40

0.64

0.47-0.88

 

Inclusion center

  

<0.001

 Marseille

1

  

 Bois-Guillaume

1.76

1.32-2.34

 

 Sèvres

1.37

0.99-1.88

 

 Besançon

1.33

0.93-1.91

 

 Caen

2.18

1.58-3.00

 

 Cochin

0.88

0.62-1.24

 

 Clermont-Ferrand

1.50

1.06-2.12

 

 Montsouris

0.96

0.70-1.33

 

Year of 1st oocyte retrieval

  

0.003

 2000

1

  

 2001

1.45

1.14-1.83

 

 2002

1.44

1.14-1.82

 

Origin of infertility

  

0.14

 Female

1

  

 Male

0.85

0.69-1.06

 

 Couple

0.80

0.62-1.03

 

 Unexplained

1.09

0.81-1.46

 

Number of embryos obtained at 1st attempt

  

0.79

 0-1

1

  

 2-5

1.06

0.85-1.32

 

 > 5

1.08

0.85-1.38

 

Number of attempts

  

0.008*

 1

1

  

 2-4

1.25

1.03-1.53

 

 >4

1.44

1.06-1.97

 
  1. * P for trend.