Table 1.
Characteristics and Serum Reproductive Hormone Concentrations (Mean (sd)) for Each Participant Group
| Premenopausal Women No Sleep Complaints (n = 11) | Perimenopausal Women |
||
|---|---|---|---|
| No Sleep Complaints (n = 17) | Insomniacs (n = 16) | ||
| Age, y | 29.1 (7.3)b | 48.9 (2.3) | 49.1 (2.7) |
| BMI, kg/m2 | 22.4 (2.4) | 25.6 (3.8) | 24.0 (3.9) |
| Ethnicity, No. Caucasian | 5 | 14 | 11 |
| Menopause status, No. in early MT | – | 16 | 15 |
| Pittsburgh Sleep Quality Index | 3.3 (1.4) | 3.9 (1.7) | 8.9 (3.5)b |
| STAI, Form Y-2 | 32.9 (7.5) | 29.6 (6.1) | 37.9 (11.1)c |
| Beck Depression Inventory | 2.9 (3.8) | 3.0 (3.6) | 11.0 (8.1)b |
| No. self-report nocturnal hot flashes | – | 3 | 6 |
| No. Objective nocturnal hot flashes | – | 2 | 2d |
| FSH, IUa | 5.6 (2.5)b | 22.3 (17.5) | 23.7 (17.3) |
| FSH range, IU | 2.3–10.0 | 2.5–62.0 | 3.4–55.8 |
| Estradiol, pg/mla | 68.1 (38.5) | 72.2 (65.1) | 50.3 (33.3) |
| Estradiol range, pg/ml | 25.7–143.2 | 5.3–227.6 | 8.9–123.1 |
| Progesterone, ng/mla | 0.6 (0.3) | 0.7 (0.6) | 0.8 (0.5) |
| Progesterone range, ng/ml | 0.2–1.2 | 0.2–2.0 | 0.2–2.1 |
Abbreviation: MT, menopause transition.
a
Analyses are based on log-transformed data.
b
Significantly different from the other two groups.
c
Significantly different from the perimenopausal women without sleep complaints.
d
Skin conductance data available from 13 women.