Table 5.
Association between previous-day and same-day sexual intercourse and reproductive hormone concentrations
| Percent Difference (95% Confidence Interval) | |||||
|---|---|---|---|---|---|
|
| |||||
| Hormones
|
Among all women in study | Among sexually active women | |||
| Previous-day sexual intercourse Any vs. None | Same-day sexual intercourse Any vs. None | Previous-day sexual intercourse Any vs. None | Same-day sexual intercourse Any vs. None | ||
| E2 (pg/mL) | Unadjusted | 5 (−3, 14) | 13 (4, 24) | 3 (−5, 12) | 12 (3, 23) |
| Adjusted I | 5 (−3, 14) | 14 (4, 24) | 4 (−4, 13) | 13 (3, 23) | |
| Adjusted II | 4 (−4, 13) | 15 (5, 27) | 3 (−5, 12) | 14 (4, 26) | |
| Mid-cycle LH (ng/mL) | Unadjusted | 11 (−5, 28) | 13 (−3, 32) | 7 (−8, 25) | 9 (−7, 28) |
| Adjusted I | 9 (−7, 26) | 11 (−5, 30) | 6 (−9, 23) | 8 (−8, 27) | |
| Adjusted II | 10 (−5, 26) | 13 (−7, 37) | 7 (−7, 23) | 10 (−10, 33) | |
| FSH (mIU/mL) | Unadjusted | 2 (−4, 8) | 6 (−1, 13) | 1 (−5, 8) | 5 (−2, 12) |
| Adjusted I | 0 (−5, 6) | 4 (−2, 12) | 0 (−6, 6) | 4 (−2, 11) | |
| Adjusted II | 1 (−5, 8) | 4 (−3, 11) | 1 (−5, 8) | 4 (−3, 11) | |
| Luteal Progesterone(ng/mL) | Unadjusted | −3 (−23, 22) | −14 (−34, 13) | −7 (−25, 15) | −19 (−38, 5) |
| Adjusted I | −9 (−27, 15) | −16 (−36, 9) | −11 (−28, 10) | −20 (−38, 4) | |
| Adjusted II | −9 (−29, 16) | −9 (−30, 17) | −12 (−31, 11) | −15 (−33, 8) | |
| Testosterone (ng/dL) | Unadjusted | 1 (−1, 4) | 6 (3, 9) | 1 (−1, 4) | 6 (3, 9) |
| Adjusted I | 1 (−1, 4) | 6 (3, 9) | 1 (−1, 4) | 6 (3, 9) | |
| Adjusted II | 2 (−1, 4) | 8 (4, 11) | 1 (−1, 4) | 8 (4, 11) | |
FSH, follicle-stimulating hormone; LH, luteinizing hormone; BMI, body mass index; E2, estradiol
Adjusted I: age, race, BMI, stress, and alcohol intake; Adjusted II: age, race, BMI, stress, alcohol intake and previous reproductive hormones using inverse probability of exposure weights