Table 3.
Subgroup analysis in participants with and without unpleasant symptoms during menses.
| M1 | M2 | MF | P for Interaction | ||
|---|---|---|---|---|---|
| TIB, min | Yes (n = 31) | 404.7 ± 69.0 | 358.6 ± 78.3 | 391.3 ± 78.9 | .150 |
| No (n = 14) | 383.8 ± 41.7 | 378.9 ± 53.0 | 413.4 ± 61.4 | ||
| TST, min | Yes (n = 31) | 361.5 ± 68.2 | 321.7 ± 75.4 | 362.9 ± 74.1 | .136 |
| No (n = 14) | 346.8 ± 46.2 | 352.6 ± 50.9 | 382.4 ± 57.6 | ||
| SOL, min | Yes (n = 31) | 14.5 (15.8) | 16.5 (19.3) | 9.0 (9.8) | .221 |
| No (n = 14) | 15.0 (24.5) | 11.5 (18.0) | 14.5 (23.0) | ||
| SE, % | Yes (n = 31) | 89.4 ± 7.7 | 89.9 ± 7.3 | 93.4 ± 5.3 | .332 |
| No (n = 14) | 90.5 ± 8.9 | 93.1 ± 4.1 | 92.7 ± 5.5 | ||
| WASO, min | Yes (n = 31) | 10.0 (12.5) | 8.0 (10.3) | 7.0 (7.9) | .585 |
| No (n = 14) | 7.5 (10.0) | 10.3 (12.0) | 6.3 (8.0) | ||
| % of REM sleep, % | Yes (n = 31) | 27.9 ± 6.2 | 25.7 ± 5.5 | 27.0 ± 4.5 | .084 |
| No (n = 14) | 24.2 ± 7.1 | 25.6 ± 6.9 | 27.9 ± 3.4 | ||
| % of N3 sleep, % | Yes (n = 31) | 22.1 ± 8.9 | 23.5 ± 6.6 | 24.8 ± 6.7 | .038 |
| No (n = 14) | 28.8 ± 7.8 | 27.0 ± 10.7 | 24.2 ± 6.3 | ||
| Ar I, events/h of sleep | Yes (n = 31) | 7.7 ± 2.7 | 7.1 ± 2.5 | 7.0 ± 1.8 | .865 |
| No (n = 14) | 6.7 ± 2.9 | 5.7 ± 2.3 | 6.0 ± 3.2 |
Continuous data are summarized using the mean ± standard deviation or median (interquartile range). ArI = arousal index, M1/2 = first and second night after menses onset, MF = midfollicular phase, N3 = deep non-REM sleep, REM = rapid eye movement, SE = sleep efficiency, SOL = sleep onset latency, TST = total sleep time, WASO = wake after sleep onset.