Regional distribution of fatiguing illnesses in the United States: a pilot study

Table 1 Weighted proportion of descriptive characteristics in mutually exclusive categories of fatiguing illness.

Characteristic	% Non-fatigued n = 444	% Chronic fatigue n = 338	% CFS-like n = 49	% Total
Female	57	66	70	58
White	81	89	88	82
Non-Hispanic	95	92	99	95
Age Group (years)
18–29	22	11	18	21
30–39	21	15	19	20
40–49	30	33	27	30
50–59	17	24	24	18
60–69	10	18	13	11
Household income
≤ $40,000*	34	50	49	37
Educational level*
≤ High school graduate	39	61	58	43

* Distribution differs significantly among categories. Tested by design-based Pearson chi-squared test P < .001).

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