Table 1.
Baseline characteristics at randomisation according to allocation to expectant management, clomifene citrate, or unstimulated intrauterine insemination for unexplained infertility. Figures are numbers (percentages) unless stated otherwise
| Expectant management (n=193) | Clomifene citrate (n=194) | Insemination (n=193) | |
|---|---|---|---|
| Mean (SD) age (years): | |||
| Women | 32 (3.4) | 32 (3.5) | 32 (3.7) |
| Men | 34 (5.1) | 34 (5.1) | 34 (5.2) |
| Median (IQR) duration of infertility (months) | 30 (25-38) | 30 (24-38) | 30 (25-40) |
| Primary infertility | 135 (70) | 144 (74) | 134 (69) |
| Mild endometriosis, | 17 (9) | 9 (5) | 13 (7) |
| Surgical treatment for endometriosis* | 3 (18) | 2 (22) | 1 (8) |
| Mild male factor infertility | 9 (5) | 11 (6) | 14 (7) |
| Median (IQR) BMI (women) | 23 (21-25) | 23 (22-26) | 23 (21-26) |
| Sperm variables: | |||
| Median (IQR) density (million/ml) | 62 (39-95) | 65 (38-105) | 58 (35-98) |
| Mean (SD) motility % | 52 (15.6) | 53 (16.4) | 53 (15.6) |
| HADS subscale ≥11: | |||
| Anxiety | 29 (15) | 28 (14) | 23 (12) |
| Depression | 3 (2) | 1 (1) | 2 (1) |
IQR=interquartile range; BMI=body mass index; HADS=hospital anxiety and depression scale.
*Percentage of those who had mild endometriosis.