Table 2 Positive predictive value of primary diagnoses given by GPs for ME/CFS
GP's primary diagnoses | ME/CFS | Not ME/CFS | Â | Positive Predictive Value (%) | ||
|---|---|---|---|---|---|---|
| Â | n | % | n | % | Total | Â |
Any primary diagnosis | 278 | 100.0 | 126 | 100.0 | 404 | 68.8 |
   Chronic fatigue syndrome | 175 | 62.9 | 67 | 53.2 | 242 | 72.3 |
   Fibromyalgia syndrome | 81 | 29.1 | 33 | 26.2 | 114 | 71.1 |
   Fatigue syndrome | 3 | 1.1 | 2 | 1.6 | 5 | 60.0 |
   Post-viral asthenic syndrome | 16 | 5.8 | 18 | 14.3 | 34 | 47.1 |
   Other a | 3 | 1.1 | 6 | 4.8 | 9 | 33.3 |