|  | Empiric Classification (CFS research case definition) | |||||
---|---|---|---|---|---|---|---|
 |  | CFS | ISF | Controls | |||
LCA Category | LCA Class Description | (n = 39) | (n = 35) | (n = 37) | |||
 |  | n | (%) | n | (%) | n | (%) |
Controls (0–2) | Well (n = 33) or Unassigned (n = 2) | 1 | (2) | 0 | (0) | 34 | (91) |
1 | Obese hypnoea (n = 23) | 15 | (38) | 8 | (23) | 0 | (0) |
3 | Obese hypnoea and stressed (n = 17) | 5 | (13) | 11 | (31) | 1 | (3) |
4 | Interoception – muscle pain (n = 11) | 1 | (3) | 9 | (26) | 1 | (3) |
5 | Interoception depression (n = 14) | 10 | (26) | 4 | (11) | 0 | (0) |
6 | Multisymptomatic, depressed, stressed (n = 11) | 7 | (18) | 3 | (9) | 1 | (3) |