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Table 1 Basic demographic characteristics of the subjects with chronic fatigue syndrome (CFS), subjects with insufficient symptoms to be CFS (ISF) and Well controls

From: Use of medications by people with chronic fatigue syndrome and healthy persons: a population-based study of fatiguing illness in Georgia

Demographic characteristic CFS
(n = 113)
ISF
(n = 264)
Well
(n = 124)
P
Race, n (%)     0.19
Caucasian 84 (74.3) 196 (74.2) 95 (76.6)  
Black 21 (18.6) 55 (20.8) 28 (22.6)  
All other 8 (7.1) 13 (4.9) 1 (0.81)  
Area, n (%)     0.98
Metro 23 (20.4) 54 (20.5) 22 (17.7)  
Urban 37 (32.7) 84 (31.8) 42 (33.9)  
Rural 53 (46.9) 126 (47.7) 60 (48.4)  
Female sex, n (%) 92 (81.4) 201 (76.1) 93 (75.0) 0.44
Age in years, mean (sd) 44.3 (10.1) 43.1 (10.4) 44.5 (10.5) 0.37
Median age 44.0 45.0 47.0  
Age range 18–59 18–59 19–59  
BMI, mean (sd) 27.5 (5.0) 27.5 (5.2) 26.0 (5.3) 0.018
Median BMI 27.0 27.0 25.0  
BMI range 17–39 16–39 18–38  
Income     0.017
Mean (sd) 64,495.8 (87,057.0) 67,455.6 (63,118.1) 85,599.2 (82,699.2)  
Median 52,025.0 55,000.0 72,272.0  
Income range 0.0 – 750,000.0 0.0 – 447,466.0 0.0 – 500,000.0  
  1. BMI, Body mass index.