Table 2.
Global relative transition frequencies between six stages
| Healthy |
CFS |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| W | I | II | III | IV | R | W | I | II | III | IV | R | |
| W | 13.2 | 1.3 | 0.0 | 0.0 | 0.3 | 16.1 | 1.7 | 0.0 | 0.0 | 0.1 | ||
| I | 5.3 | 19.0 | 0.0 | 0.0 | 5.9 | 7.6 | 17.1 | 0.0 | 0.0 | 2.4† | ||
| II | 7.2 | 10.4 | 11.2 | 0.0 | 3.2 | 7.4 | 8.6 | 12.7 | 0.0 | 3.2 | ||
| III | 0.3 | 0.1 | 10.7 | 1.3 | 0.0 | 0.4 | 0.2 | 11.9 | 2.4 | 0.0 | ||
| IV | 0.0 | 0.0 | 0.1 | 1.2 | 0.0 | 0.2 | 0.0 | 0.1 | 2.1 | 0.0 | ||
| R | 1.9 | 6.6 | 0.9 | 0.0 | 0.0 | 2.3 | 2.3† | 1.1 | 0.0 | 0.0 | ||
Global relative transition frequencies between awake (W), REM sleep (R), and stages I, II, III and IV sleep for healthy controls and patients with CFS. Characters (W, I, II, III, IV, and R) represented in rows are preceding stages, and those in columns are subsequent stages of transitions. † P < 0.01 from healthy controls.
†
P < 0.01 from healthy controls.