Table 3.
Quartiles of progesterone
| Quartile | Q1 | Q2 | Q3 | Q4 | p |
|---|---|---|---|---|---|
| Progesterone ng/ml | < 8.35 | 8.35–10.90 | 10.91–14.00 | > 14.00 | |
| n | 230 | 231 | 230 | 230 | |
| Embryo stage at freezing | |||||
| 48 h | 143 (62.2) | 142 (61.4) | 166 (72.2) | 159 (69.4) | 0.05# |
| 72 h | 87 (37.8) | 89 (38.6) | 64 (27.8) | 70 (30.6) | |
| At least one good quality embryo | 150 (65.8) | 151 (65.4) | 159 (70.0) | 148 (64.9) | 0.63 |
| Number of embryos transferred | 2.0 ± 0.7 (1.9–2.1) | 2.0 ± 0.7 (2.0–2.1) | 2.0 ± 0.6 (1.9–2.1) | 2.0 ± 0.6 (1.9–2.1) | 0.61 |
| Implantation rate | 6.6 (4.0–9.2) | 9.9 (6.6–13.2) | 12.0 (8.5–15.6) | 15.1 (10.9–19.3) | 0.004* |
| Pregnancy | 48 (20.9%) | 72 (31.2%) | 74 (32.2%) | 79 (34.3%) | 0.02* |
| Biochemical pregnancy | 13 (5.7%) | 25 (10.8%) | 17 (7.4%) | 19 (8.3%) | 0.23 |
| Clinical miscarriage | 17 (7.4%) | 13 (5.6%) | 22 (9.6%) | 14 (6.1%) | 0.36 |
| Live birth | 18 (7.8%) | 29 (12.6%) | 32 (13.9%) | 45 (19.6%) | 0.007 |
Continuous data is mean ± sd [median, range]; binary data is N (%)
#Q1 as compared to Q3
*Q1 as compared to the other quartiles