Table 3.
Means and standard deviations for subjective and objective sleep variables among clusters
| Sleep Variables | Clusters |
||
|---|---|---|---|
| HPP M (SD) | LPP M (SD) | UP M (SD) | |
| Subjective | |||
| SOL (minutes) | 44.1a (42.1) | 22.8b (19.7) | 30.5b (24.6) |
| WASO (minutes) | 83.0a (43.7) | 41.6b (25.9) | 61.7c (27.8) |
| TWT (minutes) | 190.9a (79.2) | 122.5b (65.4) | 146.8b (51.2) |
| TST (minutes) | 317.7a (77.6) | 377.0b (64.3) | 350.9b (60.6) |
| SE (%) | 62.0a (15.4) | 75.8b (12.2) | 70.1c (10.9) |
| Objective | |||
| SOL (minutes) | 12.9 (7.8) | 14.6 (9.2) | 15.4 (10.8) |
| WASO (minutes) | 63.2 (39.4) | 52.1 (30.5) | 61.7 (37.4) |
| TWT (minutes) | 80.8 (43.4) | 72.2 (38.7) | 80.6 (43.9) |
| TST (minutes) | 372.9 (45.4) | 378.7 (41.5) | 374.0 (52.3) |
| SE (%) | 82.3 (8.9) | 84.2 (8.3) | 82.4 (8.9) |
| Stage 1 (%) | 4.8 (2.5) | 5.5 (3.8) | 5.2 (3.2) |
| Stage 2 (%) | 63.4 (5.9) | 64.6 (8.2) | 63.8 (6.4) |
| Stage 3-4 (%) | 7.4 (6.5) | 7.3 (6.8) | 6.6 (7.6) |
| Stage REM (%) | 24.4 (3.6) | 22.8 (4.3) | 24.3 (5.0) |
| FNA | 2.7a (1.7) | 1.8b (1.2) | 2.1a,b (1.4) |
Means in the same row that do not share the same superscripts differ at Ps < 0.005 according to the REGW multiple range test.
HPP, high probability pattern of insomnia; LPP, low probability pattern of insomnia; UP, unpredictable pattern of insomnia; SOL, sleep onset latency; WASO, wake after sleep onset; TWT, total wake time; TST, total sleep time; SE, sleep efficiency; FNA, frequency of night awakenings.