|  |  | Case definition |  |  | ||
---|---|---|---|---|---|---|---|
Demographic variables | ME/CFS cases | CDC-1994 | Canadian | ECD | Carers | ||
 | n | % | n | n | n | n | % |
Gender | Â | Â | Â | Â | Â | Â | Â |
• Male | 37 | 21.8 | 35 | 20 | 7 | 25 | 56.8 |
• Female | 133 | 78.2 | 131 | 76 | 15 | 19 | 43.2 |
 | 170 | 100.0 | 166 | 96 | 22 | 44 | 100.0 |
Age group | Â | Â | Â | Â | Â | Â | Â |
• 18-24 | 4 | 2.4 | 4 | 1 | 2 | 2 | 4.5 |
• 25-34 | 19 | 11.2 | 19 | 13 | 2 | 7 | 15.9 |
• 35-44 | 34 | 20.0 | 33 | 22 | 4 | 17 | 38.6 |
• 45-54 | 56 | 32.9 | 55 | 34 | 7 | 11 | 25.0 |
• 55-64 | 57 | 33.5 | 55 | 26 | 7 | 7 | 15.9 |
 | 170 | 100.0 | 166 | 96 | 22 | 44 | 100.0 |
Ethnicity | Â | Â | Â | Â | Â | Â | Â |
• White British | 157 | 92.9 | 154 | 92 | 19 | 41 | 97.6 |
• Other | 12 | 7.1 | 11 | 3 | 3 | 1 | 2.4 |
 | 169 | 100.0 | 165 | 95 | 22 | 42 | 100.0 |
Carers' relationship with ME/CFS case | Â | Â | Â | Â | Â | Â | Â |
• Husband/wife/ |  |  |  |  |  |  |  |
partner | Â | Â | 35 | 25 | 4 | 35 | 81.4 |
• Parent/children |  |  | 7 | 6 |  | 7 | 16.3 |
• Other |  |  | 1 | 1 |  | 1 | 2.3 |
 |  |  | 43 | 32 | 4 | 43 | 100.0 |