N+C and N−C groups in those with their SOREM periods arising only from NREM1 or NREM2
| Group (n) | Patients with SOREM periods only from NREM1 | Patients with SOREM periods only from NREM2 | p Value* |
|---|---|---|---|
| N+C (25) | 16/25 | 5/25 | 0.019 |
| N−C (41) | 11/41 | 16/41 | >0.05 |
*χ2 test.
N+C, narcolepsy with cataplexy; N−C, narcolepsy without cataplexy; NREM, non-rapid eye movement sleep; SOREM, sleep onset rapid eye movement.