Table 2 Results of the principal component analysisab
From: Instrument completion and validation of the patient-reported apnea questionnaire (PRAQ)
Items | Factor 1 | Factor 2 | Factor 3 |
|---|---|---|---|
During the past 4 weeks, did you have a problem with: | |||
Fighting to stay awake during the day? | .290 | .727 | |
Suddenly falling asleep? | .836 | ||
Difficulty staying awake during a conversation? | .636 | .222 | |
Difficulty staying awake while watching something? (concert, movie, television) | .858 | ||
Falling asleep at inappropriate times or places? | .802 | ||
Feeling very tired? | .785 | ||
Lacking energy? | .856 | ||
Still feeling tired when you wake up in the morning? | .790 | ||
In the past 4 weeks: | |||
How difficult was it for you to do your most important daily activity? (such as your job, studying, caring for the children, housework) | .841 | ||
How often did you use all your energy on only your most important, daily activity? (such as your job, studying, caring for the children, housework) | .940 | ||
How often did you use all your energy to accomplish only your most important daily activity? (such as your job, studying, caring for the children, housework) | .825 | ||
How much difficulty did you have finding energy for your hobbies? | .770 | ||
How difficult was it for you to get your chores done? | .849 | ||
How often did you feel depressed or hopeless? | .266 | .677 | |
How often did you feel anxious? | .793 | ||
How often did you lose your temper? | .803 | ||
How often did you feel that you could not cope with everyday life? | .746 | ||
How often did you feel irritated? | .889 | ||
How often did you have a strong emotional reaction to everyday events? | .875 | ||