|
Mean (SD) factorial scores and p-values for sleep questionnaire items in CFS and non-fatigued subjects |
|||
| Factor pattern on sleep questionnaire items |
CFS (n = 35) |
NF (n = 40) |
P * |
|
|
|||
| Mean factor scores (SD)† |
Mean factor scores (SD) |
||
|
|
|||
| F1 Insomnia |
0.54 (0.8) |
-0.48 (0.9) |
.000 |
| "How often trouble sleeping", "Waking up before you wanted to", "Sleeping for less than 5 hours", "Difficulty falling asleep", "Repeated awakenings", "Waking up not feeling refreshed", "Restlessness during sleep" |
|||
|
|
|||
| F2 Sleepiness |
0.27 (1.2) |
-0.24 (0.5) |
.060 |
| "Falling asleep while sitting and talking", "Falling asleep while doing something, such as driving or talking", "Falling asleep in a car while stopped in traffic", "Falling asleep while sitting and reading", "Falling asleep as a passenger in a car", "Falling asleep while sitting quietly after a lunch", "Falling asleep while sitting inactive in a public place", "Trouble staying awake" |
|||
|
|
|||
| F3 Physical/Somatic |
0.54 (1.0) |
-0.48 (0.5) |
.001 |
| "Nightmares or waking up frightened or crying out loud", "Waking up with aches, pains, or stiffness", "Sleeping more than nine hours", "Taking medication for sleep" |
|||
|
|
|||
| F4 Apnea "Interruptions to your breathing during sleep", "Falling asleep while lying down to rest in the afternoon" |
0.09 (0.7) |
-0.08 (1.2) |
.865 |
|
|
|||
| F5 Body Clock |
0.13 (1.2) |
-0.11 (0.7) |
.610 |
| "Working shifts", "Irregular bed time and/or wake-up time during the work week or weekdays" |
|||
|
|
|||
| F6 Nasal Obstruction |
0.13 (1.1) |
-0.12 (0.8) |
.318 |
| "Loud snoring" |
|||
|
* 2-factor ANOVA, controlling for medication that influences sleep. † A higher factor score represents more agreement on the sleep questionnaire items comprising the factor (i.e. more sleep complains) | |||
Majer et al. BMC Neurology 2007 7:40 doi:10.1186/1471-2377-7-40 |
|||