Table 1.
Patient profiles and endocrine parameters
| Pregnant | Non-pregnant | P value | |
|---|---|---|---|
| Patient number | 297 | 159 | |
| Cycle number | 297 | 406 | |
| Age (years)* | 33.4 ± 4.0 | 33.6 ± 3.8 | NS |
| BMI (kg/m2)* | 20.7 ± 2.8 | 20.7 ± 2.7 | NS |
| P4 (ng/mL) | |||
| Mean* | 14.5 ± 7.6 | 10.7 ± 8.0 | < 0.01 |
| Median | 12.6 | 9.7 | NA |
| 5‰ P4 | 5.6 | 0.54 | NA |
| Lowest P4 | 2.3 | 0.1 | NA |
| E2 (pg/mL) | |||
| Mean* | 188.5 ± 118.8 | 162.6 ± 107.8 | < 0.01 |
| Median | 152.1 | 134.1 | NA |
| 5‰ E2 | 70.2 | 42.8 | NA |
| Lowest E2 | 23.4 | 25.3 | NA |
NS not significant; NA = not available
* Values are indicated by means ± standard deviations. The Mann–Whitney U-test (two-sided) was used for comparisons between the two groups