Table 2.
Factors associated with probability of response to the postal questionnaire (n = 4,029)
| |
|
Univariate analysis |
Multivariate analysis (n = 3,870) |
||||
|---|---|---|---|---|---|---|---|
| % | OR | 95% CI | P | OR | 95% CI | P | |
|
Woman’s age (years) |
|
|
|
<0.001 |
|
|
0.001 |
| < 30 |
60 |
1 |
|
|
1 |
|
|
| 30-34 |
65 |
1.23 |
1.04-1.46 |
|
1.31 |
1.10-1.57 |
|
| 35-39 |
53 |
0.77 |
0.64-0.92 |
|
0.95 |
0.79-1.16 |
|
| ≥ 40 |
39 |
0.44 |
0.34-0.55 |
|
0.68 |
0.52-0.88 |
|
|
Inclusion center |
|
|
|
<0.001 |
|
|
<0.001 |
| Marseille |
53 |
1 |
|
|
1 |
|
|
| Bois-Guillaume |
63 |
1.49 |
1.21-1.84 |
|
1.56 |
1.25-1.94 |
|
| Sèvres |
54 |
1.03 |
0.83-1.27 |
|
1.18 |
0.92-1.51 |
|
| Besançon |
64 |
1.55 |
1.20-2.00 |
|
1.53 |
1.17-2.02 |
|
| Caen |
69 |
1.97 |
1.56-2.49 |
|
2.05 |
1.60-2.62 |
|
| Cochin |
50 |
0.86 |
0.66-1.12 |
|
0.97 |
0.74-1.28 |
|
| Clermont-Ferrand |
63 |
1.47 |
1.16-1.86 |
|
1.29 |
1.00-1.66 |
|
| Montsouris |
48 |
0.79 |
0.63-0.99 |
|
0.85 |
0.67-1.08 |
|
|
Year of 1st oocyte retrieval |
|
|
|
0.03* |
|
|
0.002* |
| 2000 |
56 |
1 |
|
|
1 |
|
|
| 2001 |
57 |
1.05 |
0.89-1.23 |
|
1.10 |
0.92-1.32 |
|
| 2002 |
60 |
1.18 |
1.01-1.39 |
|
1.31 |
1.09-1.56 |
|
|
Origin of infertility |
|
|
|
0.75 |
|
|
0.14 |
| Female |
57 |
1 |
|
|
1 |
|
|
| Male |
58 |
1.02 |
0.88-1.19 |
|
0.95 |
0.80-1.11 |
|
| Couple |
57 |
1.01 |
0.84-1.21 |
|
0.93 |
0.76-1.13 |
|
| Unexplained |
60 |
1.12 |
0.91-1.38 |
|
1.22 |
0.97-1.53 |
|
|
Number of embryos obtained at 1stattempt |
|
|
|
<0.001* |
|
|
0.40* |
| 0-1 |
55 |
1 |
|
|
1 |
|
|
| 2-5 |
56 |
1.04 |
0.87-1.24 |
|
0.97 |
0.81-1.17 |
|
| > 5 |
62 |
1.34 |
1.12-1.61 |
|
1.06 |
0.87-1.30 |
|
|
Number of attempts |
|
|
|
0.61* |
|
|
0.04* |
| 1 |
57 |
1 |
|
|
1 |
|
|
| 2-4 |
58 |
1.06 |
0.92-1.21 |
|
1.12 |
0.97-1.30 |
|
| >4 |
57 |
1.02 |
0.81-1.28 |
|
1.27 |
0.99-1.63 |
|
|
Result of IVF |
|
|
|
|
|
|
|
| No live birth |
48 |
1 |
|
|
1 |
|
|
| ≥ 1 live birth | 70 | 2.44 | 2.14-2.78 | <0.001 | 2.26 | 1.96-2.61 | <0.001 |
* P for trend.