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Table 1 Statistics on CFS patients and controls from the U.S

From: Serologic and PCR testing of persons with chronic fatigue syndrome in the United States shows no association with xenotropic or polytropic murine leukemia virus-related viruses

      Race Gender
Population N States AvgAge Avg Duration of Illness Caucasian Other Female Male
Severe CFS 31 17 44 12.8 yrs 87% 13% 61% 39%
Unclassified CFS 14 9 40 12.3 yrs 79% 21% 86% 14%
CFS Negative 42 12 23 n/a 71% 29% 45% 55%
TOTAL 87 21    78% 22% 57% 43%
  1. Shows the number of states within the U.S. that participants were recruited from, the average participant age, the average time since the onset of CFS symptoms, the race and gender of participants from each class of sample.
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