Skip to main content

Table 1 Sample characteristics

From: Daytime napping associated with increased symptom severity in fibromyalgia syndrome

  Median Interquartile range
Duration since symptom onset in years 7.0 10.0
Years since diagnosis 3.0 6.0
McGill Pain questionnaire (range 0–45) 30.0 11.0
  Frequency Percentage
Marital status   
Married or living with partner 733 70.2
Separated/divorced/widowed 192 18.4
Single 119 11.4
Taking medication for FMS 885 84.8
Diagnosed co-morbid condition/s 844 80.8
In current employment 386 37.0
Napping behaviour   
Regularly nap once a day or more 408 39.1
Occasionally or never nap 636 60.9
  Mean Standard deviation
Age 46.9 10.4
MOS Sleep problems index I (range 0–100) 65.2 17.0
MOS Sleep problems index II (range 0–100) 66.9 16.7
Fatigue severity score (range 9–63) 55.3 9.9
HADS Anxiety subscale (range 0–21) 12.2 4.4
HADS Depression subscale (range 0–21) 10.4 4.1
EMQ-R Everyday memory   
Total memory score (range 0–52) 32.74 13.5
Item score (Mean) (range 0–4) 2.52 1.0