Table 3 Descriptive statistics of summary and domain scores of the SF-12 among patients with fibromyalgia
| Â | Min | % at Min | Q1 | Median | Mean | Q3 | Max | % at Max |
|---|---|---|---|---|---|---|---|---|
Summary scores | ||||||||
 Mental component summary | 3.57 | 0.05% | 31.98 | 41.07 | 41.49 | 51.22 | 71.53 | 0.05% |
 Physical component summary | 7.25 | 0.05% | 23.99 | 31.29 | 31.29 | 39.88 | 63.16 | 0.05% |
 Health utilities | 0.35 | 1.50% | 0.49 | 0.57 | 0.57 | 0.64 | 1.00 | 0.23% |
Domain scores | ||||||||
 Bodily pain* | 0.00 | 20.49% | 25.00 | 25.00 | 25.00 | 50.00 | 100.00 | 2.41% |
 General health* | 0.00 | 13.34% | 25.00 | 25.00 | 25.00 | 60.00 | 100.00 | 1.55% |
 Vitality* | 0.00 | 30.78% | 0.00 | 25.00 | 25.00 | 50.00 | 100.00 | 1.14% |
 Social functioning* | 0.00 | 12.66% | 25.00 | 50.00 | 50.00 | 75.00 | 100.00 | 13.93% |
 Mental health** | 0.00 | 2.73% | 37.50 | 50.00 | 50.00 | 75.00 | 100.00 | 1.82% |
 Emotional role limitations** | 0.00 | 8.24% | 37.50 | 50.00 | 50.00 | 87.50 | 100.00 | 21.36% |
 Physical role limitations** | 0.00 | 21.04% | 12.50 | 25.00 | 25.00 | 50.00 | 100.00 | 4.74% |
 Physical functioning* | 0.00 | 29.96% | 0.00 | 25.00 | 25.00 | 50.00 | 100.00 | 10.75% |