Table 5.
Means and standard deviations for clinical variables among clusters
| Clinical Variables | Clusters |
||
|---|---|---|---|
| HPP M (SD) | LPP M (SD) | UP M (SD) | |
| Insomnia Severity Index | 18.7a (3.7) | 16.1b (4.2) | 17.5a,b (3.4) |
| DBAS-30, q.19 (unpredictability) | 7.7 (2.5) | 7.1 (2.8) | 7.3 (2.8) |
| FMI: General fatigue1 | 13.0 (3.2) | 12.1 (3.3) | 11.7 (3.6) |
| FMI: Physical fatigue | 9.4 (3.6)a,b | 10.1 (3.2)a | 8.5 (3.2)b |
| FMI: Mental fatigue | 11.6 (3.5)a | 10.6 (4.0)a,b | 9.7 (3.3)b |
| BAI: Anxiety symptoms1 | 8.5 (6.3) | 8.0 (5.9) | 5.9 (5.0) |
| BDI: Depression symptoms | 8.2 (5.1) | 8.8 (5.2) | 7.9 (6.4) |
1
P = 0.08. Means in the same row that do not share the same superscripts differ at Ps < 0.02 according to the REGW multiple range test.
HPP, high probability pattern of insomnia; LPP, low probability pattern of insomnia; UP, unpredictable pattern of insomnia; DBAS-16, Dysfunctional Beliefs and Attitudes about Sleep scale-16 items; FMI, Fatigue Multidimensional Inventory; BDI, Beck Depression Inventory; BAI, Beck Anxiety Inventory.