Information recorded in the referral letter for all 479 couples referred in the trial; number (%).
| Referrals following open access HSG | Referred directly to hospital | |
|---|---|---|
| n = 23 | n = 456 | |
| Advice | ||
| Frequency of sexual intercourse | 2 (9) | 14 (3) |
| Avoiding testicular hyperthermia | 0 | 3 (0) |
| Smoking | 3 (13) | 37 (8) |
| Alcohol | 1 (4) | 24 (5) |
| Recreational drug use | 0 | 2 (0) |
| Information | ||
| Comorbidities | 2 (9) | 77 (17) |
| Rubella status | 10 (43) | 55 (12) |
| In receipt of folic acid | 14 (61) | 46 (10) |
| Investigations | ||
| Semen analysis | 23 (100) | 189 (41) |
| Mid-luteal progesterone | 23 (100) | 238 (52) |
| Follicle stimulating hormone | 22 (96) | 179 (39) |
| Thyroid function test | 6 (26) | 130 (29) |
| Prolactin | 6 (26) | 63 (14) |