Table 4.
PCS and MCS mean scores for ME/CFS cases and selected SF-36 disease-specific norms
| Disease | Physical Component Summary |
Mental Component Summary |
||
|---|---|---|---|---|
| mean | SDa | mean | SDa | |
| ME/CFS (n = 170) | 26.8 | 8.4 | 34.1 | 11.3 |
| Back pain/sciatica (n = 2648) | 45.7 | 10.7 | 47.6 | 11.1 |
| Cancer (except skin) (n = 253) | 40.9 | 9.9 | 47.6 | 10.6 |
| Depression (n = 942) | 45.4 | 11.6 | 36.3 | 11.9 |
| Diabetes (n = 1011) | 41.1 | 11.2 | 47.8 | 11.5 |
| Heart disease (n = 691) | 38.9 | 10.0 | 48.3 | 10.7 |
| Limited use of arm(s)/leg(s) (n = 605) | 39.0 | 11.5 | 46.7 | 12.2 |
| Lung disease (n = 328) | 38.3 | 10.8 | 45.6 | 11.5 |
| Osteoarthritis (n = 1013) | 38.6 | 10.1 | 48.0 | 10.9 |
| Rheumatoid arthritis (n = 514) | 40.0 | 10.6 | 47.8 | 11.3 |
| Vision impairment (n = 628) | 44.0 | 11.6 | 45.8 | 11.9 |
a SD = Standard Deviation