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Table 1 Demographic and clinical characteristics of the study participants

From: Coexistence of cerebral hypometabolism and neuroinflammation in the thalamo-limbic-brainstem region in young women with functional somatic syndrome

CharacteristicsFSS group (n = 12)Control group
[18F]FDG PET (n = 12)[11C]DPA713 PET (n = 16)
Age (years)19.3 ± 1.532.8 ± 9.5*20.6 ± 1.6
Women/men12/012/016/0
Disease duration (years)4.3 ± 0.7n.a.n.a.
Clinical scores (score range) n.a.n.a.
 Numerical rating scale (0 - 10)a4.0 ± 1.8n.a.n.a.
 Chalder fatigue scale (1 - 33)b21.4 ± 7.5n.a.n.a.
 Stanford sleepiness scale (1 - 7)c3.4 ± 1.4n.a.n.a.
WAIS-IIId
 Full-scale IQ80.6 ± 11.6n.a.n.a.
 Verbal IQ81.8 ± 8.6n.a.n.a.
 Performance IQ83.7 ± 16.8n.a.n.a.
 Verbal comprehension86.7 ± 9.3n.a.n.a.
 Perceptual organization83.6 ± 16.4n.a.n.a.
 Working memory79.6 ± 14.2n.a.n.a.
 Processing speed80.4 ± 18.4n.a.n.a.
WMS-Rd
 Full memory86.1 ± 16.6n.a.n.a.
 Verbal memory85.7 ± 19.2n.a.n.a.
 Visual memory87.9 ± 16.2n.a.n.a.
 Attention memory77.3 ± 15.2n.a.n.a.
 Delayed memory74.7 ± 20.6n.a.n.a.
  1. Data are the mean ± standard deviation (SD) or the number
  2. IQ intelligence quotient, n.a. not available, WAIS-III Wechsler Adult Intelligence Scale-Third Edition, WMS-R Wechsler Memory Scale-Revised
  3. *p < 0.05
  4. aPain scale ranges from 0 (no pain) to 10 (worst pain)
  5. bFatigue scale with higher scores indicating a greater degree of fatigue
  6. cSleep scale ranges from 1 (wide awake) to 7 (no longer fighting sleep)
  7. dThe average IQ and memory score is defined as 100 and the SD as 15 (i.e., approximately two-thirds of all scores between 85 and 115)