Skip to main content

Table 1 Background characteristics

From: Are there subgroups of chronic fatigue syndrome? An exploratory cluster analysis of biological markers

Total number of participants 116
Sex-no. of males (%) 31 (26.7)
Age, years-mean (SD) 15.4 (1.6)
BMI, kg/m2-mean (SD) 21.5 (4.2)
Disease duration, months-mean (SD) 21.2 (14.7)
Fukuda-no. fulfilling criteria (%)a 85 (75.2)
Canada-no. fulfilling criteria (%)b 46 (41.4)
  1. BMI: Body mass index; SD: Standard deviation
  2. aNumber of patients fulfilling the CDC Fukuda 1994 diagnostic criteria for Chronic Fatigue Syndrome [Fukuda 1994]
  3. bNumber of patients fulfilling the Canada 2003 diagnostic criteria for Chronic Fatigue Syndrome [14]