Table 2.
Percent difference in reproductive hormone concentrations by sexual activity category
| Percent Difference (95% Confidence Interval) | ||||||
|---|---|---|---|---|---|---|
|
| ||||||
| Hormones | Sexually inactive | Not sexually active during study | Weekly or less | Greater than weekly | Sexually activea | |
| E2 (pg/mL) | Unadjusted | Reference | 18 (7, 30) | 20 (9, 32) | 11 (1, 23) | 16 (7, 26) |
| Adjusted | Reference | 15 (4, 28)b | 16 (4, 28)b | 12 (1, 25) | 15 (5, 25) | |
| Mid-cycle LH (ng/mL) | Unadjusted | Reference | 20 (4, 37) | 17 (2, 33) | 27 (11, 46) | 21 (8, 35) |
| Adjusted | Reference | 22 (5, 41)b | 21 (5, 40) | 29 (11, 50)b | 23 (9, 40) | |
| FSH (mIU/mL) | Unadjusted | Reference | 9 (1, 19) | 16 (8, 26) | 14 (5, 24) | 13 (6, 21) |
| Adjusted | Reference | 4 (−4, 13) | 5 (−4, 14) | 1 (−7, 11) | 4 (−4, 11) | |
| Luteal Progesterone (ng/mL) | Unadjusted | Reference | 53 (24, 90) | 56 (27, 93) | 59 (28, 97) | 56 (31, 86) |
| Adjusted | Reference | 43 (14, 79)b | 39 (11, 75)b | 41 (11, 78)b | 41 (16, 71) | |
| Testosterone (ng/dL) | Unadjusted | Reference | −4 (−13, 5) | −10 (−18, −1) | −9 (−18, 0) | −8 (−15, 0) |
| Adjusted | Reference | 6 (−3, 15) | 0 (−9, 9) | 5 (−4, 15) | 3 (−4, 12) | |
Abbreviations: E2, estradiol; LH, luteinizing hormone; FSH, follicle-stimulating hormone; BMI, body mass index Adjusted for age, race, BMI, stress, and alcohol intake
a
Sexually active includes not sexually active during study, weekly or less, and greater than weekly.
b
Pair-wise comparison of adjusted mean with sexually inactive group was statistically significant (Tukey P<0.05). No other pair-wise comparisons of adjusted means were statistically significant.