Table 1.
Participants’ baseline characteristics on menstrual cycle days 2–3.
| Characteristics | Ding-Kun Pill group (n = 231) | Placebo group (n = 231) | P value |
|---|---|---|---|
| Age at inclusion (years; mean (SD)): | 37.9 (2.3) | 37.8 (2.2) | 0.771 |
| Age ≥37 | 147 (63.6) | 155 (67.1) | 0.434 |
| Age ≥40 | 67 (29.0) | 58 (25.1) | 0.346 |
| Body mass index (kg/m2; mean (SD)) ⁑ | 23.2 (3.0) | 23.0 (2.9) | 0.372 |
| Duration of infertility (years; mean (IQR)) | 3.3 (4.0) | 4.0 (4.0) | 0.307 |
| Nulliparous | 68 (29.4) | 82 (35.5) | 0.164 |
| Primary cause of infertility: | 0.816 | ||
| Tubal factor | 168 (72.7) | 159 (68.8) | |
| Male factor | 52 (22.5) | 59 (25.5) | |
| Tubal + Male factor | 7 (3.0) | 9 (3.9) | |
| Unexplained infertility | 4 (1.7) | 4 (1.7) | |
| AMH (ng/ml; median (IQR)) | 0.9 (0.6) | 0.9 (0.6) | 0.677 |
| Total AFC (mean (IQR)) | 5.0 (2.0) | 5.0 (2.0) | 0.561 |
FSH (mIU/ml; mean (IQR)) 
|
9.0 (5.1) | 9.0 (5.2) | 0.795 |
| LH (mIU/ml; mean (IQR))
|
4.2 (3.3) | 4.6 (3.0) | 0.128 |
| Estradiol (pg/ml; mean (IQR))
|
46.3 (30.0) | 50.1 (30.0) | 0.367 |
In any of the baseline characteristics, no significant differences between groups (P <0.05) were observed. AMH, anti-müllerian hormone; AFC, antral follicle count; FSH, follicle stimulating hormone; LH, luteinizing hormone; IQR, interquartile range; SD, standard deviation.
⁑Body mass index is weight (kg) divided by height squared (m2).
FSH was missing for two women in placebo group. LH was missing for one woman in Ding-Kun Pill group and for three women in placebo group. Estradiol was missing for one woman in Ding-Kun Pill group and for three women in placebo group.
Data are presented as numbers (%) unless otherwise noted.