Table 1.

Demographics

MalesFemales
Chronic fatigueControlsChronic fatigueControls
ParametersMean (SEM)RangeMean (SEM)RangePMean (SEM)RangeMean (SEM)RangeP
Subject number, n = 8422182321
Age, y53 (2.8)21–6753 (3.5)23–69ns52 (2.5)20–6748 (2.8)25–69ns
Age of onset, y30 (2.6)13–54n/an/an/a33 (2.3)7–52n/an/an/a
Duration of Illness, y21 (3.0)3–49n/an/an/a17 (2.3)2–40n/an/an/a
Karnofsky performance score62 (3.2)30–90100 (0)1004 × 10−1354 (3.3)30–90100 (0.5)90–1003 × 10−16
Number of medications4.1 (0.9)0–160.2 (0.2)0–30.00054.6 (0.9)0–200.3 (0.1)0–26 × 10−5
Years of educationa16 (0.8)8–2118 (0.9)10–25ns16 (0.6)9–2116 (0.8)11–25ns
BMI25.0 (0.7)17–3126.7 (0.8)21–34ns24.6 (1.2)18–4423.8 (0.8)19–32ns
Ethnicity
White/non-Hispanic2216ns2219ns
Hispanic0201
Asian0001
Native American0010
African American0000
  • a Years of education: High school = 12; AA = 14; bachelor’s = 16; master’s = 18; JD = 19; MD, DO, or ND = 20; PhD = 21; MD–PhD = 25.