Table 2.
Subjective assessment of sleep following overnight laboratory recordings in the Follicular and Late-luteal phases of the menstrual cycle in women with severe PMS and controls.
| Controls (N = 18) | Severe PMS (N = 18) | ||||
|---|---|---|---|---|---|
| Variable | Follicular phase | Late-luteal phase | Follicular phase | Late-luteal phase | ANOVA |
| Sleep onset latency (min) | 17 (15) | 16 (15) | 26 (31) | 27 (31) | Group: ns Phase: ns Interaction: ns |
| Number of awakenings#a | 1.7 (1) | 2.4 (2)* | 2.5 (1) | 3.2 (1)* | Group: F(1,33) = 5.1, p = 0.03 Phase: F(1,33) = 6.3, p = 0.02 Interaction: ns |
| Wakefulness after sleep onset (min) | 19 (21) | 18 (18) | 21 (19) | 24 (23) | Group: ns Phase: ns Interaction: ns |
| Sleep Quality (Very bad – Very good, mm) | 63.0 (23.8) | 69.2 (18.5) | 66.2 (25.1) | 54.3 (23.9)* | Group: ns Phase: ns Interaction: F (1,34) = 4.3, p = 0.04 |
| Nighttime Restlessness (Not at all – Very, mm) | 40.0 (26.5) | 43.0 (23.4) | 44.9 (30.0) | 54.5 (24.2) | Group: ns Phase: ns Interaction: ns |
| Ease of waking (Not at all – Very, mm) | 70.3 (15.3) | 67.0 (20.5) | 63.9 (32.1) | 60.2 (27.8) | Group: ns Phase: ns Interaction: ns |
| Feeling Refreshed (Not at all – Very, mm)# | 69.2 (17.1) | 71.9 (17.4) | 55.8 (26.8) | 57.7 (21.1) | Group: F(1,34) = 4.9, p = 0.03 Phase: ns Interaction: ns |
| Alertness (Not at all – Very, mm) | 73.5 (14.0) | 72.4 (16.2) | 60.1 (23.4) | 58.4 (22.9) | Group: F(1,34) = 4.1, ns (p = 0.051) Phase: ns Interaction: ns |
*
p < 0.05 compared with follicular phase;
#
p < 0.05 compared with controls;
a
n = 17 controls