Table 2 Description of the study sample
ME/CFS (n = 174) | HC (n = 86) | IC (n = 10) | ||||
|---|---|---|---|---|---|---|
n | % | n | % | n | % | |
Age (years) | ||||||
18–29 | 17 | 9.77 | 15 | 17.44 | 0 | 0 |
30–39 | 26 | 14.94 | 13 | 15.12 | 1 | 10.00 |
40–49 | 28 | 16.09 | 10 | 11.63 | 1 | 10.00 |
50–59 | 46 | 26.44 | 31 | 36.05 | 5 | 50.00 |
≥ 60 | 57 | 32.76 | 17 | 19.77 | 3 | 30.00 |
Sex | ||||||
Male | 50 | 28.74 | 28 | 32.56 | 2 | 20.00 |
Female | 124 | 71.26 | 58 | 67.44 | 8 | 80.00 |
Race** | ||||||
White | 153 | 87.93 | 53 | 61.63 | 10 | 100.00 |
Black | 1 | 0.57 | 4 | 4.65 | 0 | 0 |
All others | 11 | 6.32 | 20 | 23.26 | 0 | 0 |
Missing | 9 | 5.17 | 9 | 10.47 | 0 | 0 |
Ethnicity** | ||||||
Hispanic | 10 | 5.75 | 25 | 29.07 | 0 | 0 |
Non-Hispanic | 146 | 83.91 | 51 | 59.30 | 8 | 80.00 |
Missing | 18 | 10.34 | 10 | 11.63 | 0 | 0 |
Marital status* | ||||||
Married/committed | 84 | 48.28 | 56 | 65.12 | 8 | 80.00 |
Previously married | 30 | 17.24 | 13 | 15.12 | 1 | 10.00 |
Never married | 57 | 32.76 | 17 | 19.77 | 1 | 10.00 |
Missing | 3 | 1.72 | 0 | 0 | 0 | 0 |
Employment** | ||||||
Full-time | 22 | 12.64 | 49 | 56.98 | 4 | 40.00 |
Part-time | 19 | 10.92 | 17 | 19.77 | 1 | 10.00 |
Not working | 109 | 62.64 | 17 | 19.77 | 3 | 30.00 |
Missing | 24 | 13.79 | 3 | 3.49 | 2 | 20.00 |
Insurance* | ||||||
Yes | 169 | 97.13 | 77 | 89.53 | 10 | 100.00 |
No | 5 | 2.87 | 9 | 10.47 | 0 | 0 |
Education | ||||||
Less than high school | 1 | 0.57 | 2 | 2.33 | 0 | 0 |
High school graduate | 43 | 24.71 | 22 | 25.58 | 5 | 50.00 |
College graduate | 73 | 41.95 | 27 | 31.40 | 1 | 10.00 |
Post college | 56 | 32.18 | 34 | 39.53 | 4 | 40.00 |
Missing | 1 | 0.57 | 1 | 1.16 | 0 | 0 |
Illness onset | ||||||
Gradual | 47 | 29.94 | NA | NA | NA | NA |
Sudden | 110 | 70.06 | NA | NA | NA | NA |