Table 1.
Demographic characteristics and laboratory parameters of the patients
| Serum P4 group | Q1 (<7.8 ng/mL) | Q2 (7.8-10.8 ng/mL) | Q3 (10.8-13.7 ng/mL) | Q4 (>13.7 ng/mL) | P value | |
|---|---|---|---|---|---|---|
| n=59 | n=59 | n=59 | n=58 | |||
| Age (Y) | 35.3 ± 4.5 | 36.1 ± 4.0 | 37.3 ± 4.0 | 36.6 ± 4.6 | 0.091† | |
| BMI (kg/m2) | 20.5 ± 2.9 | 20.9 ± 2.4 | 20.8 ± 3.1 | 20.1 ± 1.8 | 0.361† | |
| Drug | <0.001§ | |||||
| Lutinus | 6 (10.2) | 14 (23.7) | 15 (25.4) | 28 (48.3) | ||
| Utrogestan | 25 (42.4) | 16 (27.1) | 15 (25.4) | 4 (6.9) | ||
| Luteum | 3 (5.1) | 9 (15.3) | 21 (35.6) | 23 (39.7) | ||
| Crinone | 25 (42.4) | 20 (33.9) | 8 (13.6) | 3 (5.2) | ||
| Pregnancy history | 0.768§ | |||||
| Primary | 26 (44.1) | 26 (44.1) | 31 (52.5) | 27 (46.6) | ||
| Secondary | 33 (55.9) | 33 (55.9) | 28 (47.5) | 31 (53.4) | ||
| Endometrial thickness (mm) | 11.1 ± 1.7 | 11.1 ± 2.2 | 11.2 ± 1.9 | 11.1 ± 1.7 | 0.992† | |
| Previous transfers | 0.468§ | |||||
| 0 | 25 (42.4) | 19 (32.2) | 16 (27.1) | 15 (25.9) | ||
| 1 | 12 (20.3) | 16 (27.1) | 17 (28.8) | 20 (34.5) | ||
| ≥ 2 | 22 (37.3) | 24 (40.7) | 26 (44.1) | 23 (39.7) | ||
| Participation of study | 0.563§ | |||||
| 1 | 45 (76.3) | 42 (71.2) | 36 (61.0) | 38 (65.5) | ||
| 2 | 9 (15.3) | 14 (23.7) | 18 (30.5) | 15 (25.9) | ||
| ≥ 3 | 5 (8.5) | 3 (5.1) | 5 (8.5) | 5 (8.6) | ||
| Transferred embryo | 0.132§ | |||||
| Cleavage-stage | 28 (47.5) | 32 (54.2) | 31 (52.5) | 20 (34.5) | ||
| Blastocyst | 31 (52.5) | 27 (45.8) | 28 (47.5) | 38 (65.5) | ||
| Quality of blastocyst | 0.781§ | |||||
| High | 21 (67.7) | 21 (77.8) | 21 (75.0) | 26 (68.4) | ||
| Poor | 10 (32.3) | 6 (22.2) | 7 (25.0) | 12 (31.6) | ||
| Clinical pregnancy rate | 17 (28.8) | 22 (37.3) | 19 (32.2) | 25 (43.1) | 0.394§ | |
| Fetal heart beat rate | 14 (23.7) | 19 (32.2) | 16 (27.1) | 18 (31.0) | 0.731§ | |
| Live birth rate | 12 (20.3) | 19 (32.2) | 15 (25.4) | 16 (27.6) | 0.530§ | |
| Miscarriage rate | 5 (29.4) | 3 (13.6) | 4 (21.1) | 9 (36.0) | 0.340§ | |
BMI; Body mass index, P4; Progesterone, † ; ANOVA, and § ; Pearson's chi-square test, Q1-Q4 groups were divided according to the serum P4 level. Data are presented as mean ± SD or as number and count (%).