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Monitored cycles in subjects with unexplained infertility (UI) by leukemia inhibitor factor (LIF) results.
| Type of cycle | LIF negative (n = 72 cycle) |
LIF positive (n = 132) |
|---|---|---|
| Natural | 2 (2.7) | 10 (7.6) |
| Oral agents (clomiphene citrate [CC] or letrozole) | 44 (61) | 72 (55.4) |
| Sequential (oral plus gonadotropins) | 16 (22.2) | 33 (25.0) |
| Superovulation | 4 (5.5) | 6 (4.5) |
| IVF/frozen embryo transfer | 6 (8.3) | 11 (8.3) |
Note: P values are not significant.
