Table 2.
IVF cycle characteristics for pregnant versus non-pregnant patients
| Pregnant | Not pregnant | |
|---|---|---|
|
Percent of total cycles |
36.7 |
63.3 |
|
Age (years) |
36.5 ± 5.3 |
37.0 ± 4.6 |
|
Embryos biopsied (n) |
7.7 ± 3.7 |
7.0 ± 3.8 |
|
≤ 6 n (%) |
20 (50.0) |
35 (50.7) |
|
≥ 7 n (%) |
20 (50.0) |
34 (49.3) |
|
Euploid embryos (n)1 |
4.5 ± 2.4 |
3.3 ± 2.2 |
|
≤ 3 n (%) |
16 (40.0) |
42 (60.9) |
|
% pregnant |
27.6 |
|
|
≥ 4 n (%) |
24 (60.0) |
27 (39.1) |
|
% pregnant |
47.1 |
|
|
Embryos transferred (n) |
2.1 ± 0.7 |
1.6 ± 0.8 |
|
≥ 2 euploid embryos available2 |
|
|
|
n (%) pregnant ET x 1 |
4/35 (11.4) |
|
| n (%) pregnant ET x 2 | 36/74 (48.6) |
Pregnant and non-pregnant women neither differed in age nor in number of embryo biopsied. 1Logistic regression for pregnancy, adjusted for age and depending on whether ≥4 or ≤3 euploid embryo were present in cycle, adjusted by number of embryos biopsied and transferred, demonstrated over 3 fold pregnancy odds in women who had ≥ 4 euploid embryos (95% CI 1.224 to 9.201, Exp 3.356, P = 0.019). 2Logistic regression analysis, adjusted for age cycle number, euploid embryos and depending on whether ≤1 or ≥2 euploid embryo were transferred demonstrated 6.553-times the odds of pregnancy with transfer of ≥2 embryos (95 CI 1.979 to 21.695, Exp 6,553, P = 0.002).