Table 2.
Variables Derived from the Polysomnogram (Mean (sd)) for Each Participant Group
| Premenopausal Women No Sleep Complaints (n = 11) | Perimenopausal Women |
||
|---|---|---|---|
| No sleep Complaints (n = 17) | Insomniacs (n = 16) | ||
| Time in bed, min | 459.8 (56.8) | 455.1 (33.8) | 429.0 (34.1) |
| Total sleep time, min | 426.6 (54.5) | 407.6 (36.2) | 376.7 (30.4)a |
| Sleep onset latency, min | 7.5 (7.1) | 10.9 (8.2) | 11.6 (8.5) |
| Latency to REM, min | 86.1 (33.4) | 88.2 (27.0) | 90.7 (34.8) |
| Sleep efficiency, % | 92.8 (3.2) | 89.6 (5.3) | 88.0 (5.3)b |
| WASO, min | 25.7 (14.7) | 36.6 (19.6) | 40.7 (23.7) |
| Time in N1, min | 31.3 (13.3) | 32.5 (12.1) | 30.8 (14.7) |
| Time in N2, min | 226.3 (43.9) | 223.6 (32.1) | 209.7 (24.7) |
| Time in N3, min | 66.3 (21.7) | 62.7 (14.3) | 49.5 (28.4) |
| Time in REM, min | 97.1 (26.5) | 88.7 (19.4) | 86.6 (19.8) |
| Awakenings, No. | 21.6 (10.9) | 20.8 (7.1) | 19.5 (6.9) |
| Arousals, No. | 53.3 (20.6) | 53.6 (17.4) | 52.0 (24.9) |
| ArI, No./h | 7.5 (2.7) | 8.0 (2.9) | 8.3 (4.0) |
a
Significantly different from the other two groups.
b
Significantly different from the premenopausal women without sleep complaints.