Table 1. Demographics and treatment characteristics in the total population of the two trials (values are mean ± standard deviation or numbers and proportions).
| Parameter | Treatment | P value | |
|---|---|---|---|
| Progesterone s.c. (n = 714) | Progesterone vaginal (n = 721) | ||
| Age (years) | 33.8 (4.3) | 34.0 (4.4) | 0.419 |
| BMI (Kg/m2) | 23.2 (3.2) | 23.3 (3.1) | 0.387 |
| Previous children, n (%) | 218 (30.53) | 222 (30.79) | 0.954 |
| Duration of infertility (months) | 40.4 (31.2) | 41.0 (28.4) | 0.148 |
| Baseline FSH (IU/ml) | 7.0 (2.2) | 7.0 (2.1) | 0.830 |
| No. of oocytes retrieved | 13.3 (8.1) | 13.0 (7.5) | 0.613 |
| No. of embryos transferred | 2.2 (0.7) | 2.1 (0.7) | 0.422 |
| Endometrial thickness (mm) | 11.01 (2.23) | 11.15 (2.56) | 0.563 |
| Type of treatment, n (%) | 0.391 | ||
| IVF | 200 (28.01) | 191 (26.49) | |
| ICSI | 421 (58.96) | 449 (62.27) | |
| Both | 93 (13.03) | 81 (11.23) | |
| Transfer difficulty, n (%) | 0.151 | ||
| Easy | 668 (93.56) | 665 (92.23) | |
| Moderately difficult | 42 (5.88) | 50 (6.93) | |
| Extremely difficult | 4 (0.56) | 2 (0.28) | |
| Not applicable | 0 (0.00) | 4 (0.55) | |