Table 3.
ROC analysis for COH variables in the previous IVF and the ZIFT cycles
| Variable | Cut off | Sensitivity | Specificity | p-value |
|---|---|---|---|---|
|
Previous IVF cycle
|
|
|
|
|
| Number of cycles |
≤6 |
27.2 |
96.435 |
ns |
| Patients’ age (years) |
≤31 |
58.3 |
71.4 |
ns |
| Mean number of daily gonadotropin ampoules used |
≤3.5 |
90.9 |
41.9 |
ns |
| Peak E2 levels on day of hCG administration (pg/ml) |
≤1656 |
54.5 |
64.5 |
ns |
| Number of 2PN |
>8 |
54.5 |
90.6 |
ns |
| Total number of top quality |
≤2 |
91.6 |
28.1 |
ns |
| Embryos (TQE) |
|
|
|
|
| Ratio of number of TQE to 2PN |
≤0.41 |
100.0 |
25.0 |
ns |
| Number of embryos transferred |
>2 |
75.0 |
33.3 |
ns |
|
ZIFT cycle
|
|
|
|
|
| Mean number of daily gonadotropin ampoules used |
≤4 |
100 |
28.5 |
ns |
| Peak E2 levels on day of hCG administration (pg/ml) |
≤2370 |
81.8 |
42.8 |
ns |
| Number of 2PN |
>7 |
63.6 |
74.2 |
<0.05 |
| Number of 2PN transferred | >4 | 75.0 | 48.5 | ns |