Table 3.
Polysomnographic results of patients with IDA+RLS and iRLS.
| IDA+RLS (n = 26) | iRLS (n = 40) | P* | |
|---|---|---|---|
| TST, min | 353.56 ± 125.64 | 367.17 ± 71.44 | .904 |
| Latency to stage N2 sleep, min | 29.04 ± 43.92 | 22.14 ± 17.58 | .362 |
| Latency to sleep onset, min | 19.58 ± 31.10 | 17.25 ± 14.44 | .297 |
| Latency to REM sleep, min | 110.25 ± 94.74 | 131.33 ± 76.67 | .123 |
| Sleep efficiency % | 71.63 ± 20.49 | 76.94 ± 13.00 | .469 |
| TST, stage N1 sleep, % | 14.72 ± 9.50 | 32.48 ± 130.64 | .145 |
| TST, stage N2 sleep, % | 50.57 ± 10.66 | 48.17 ± 10.63 | .298 |
| TST, stage N3 sleep, % | 14.40 ± 7.33 | 18.11 ± 6.78 | .087 |
| TST, REM sleep, % | 20.31 ± 8.83 | 20.70 ± 7.11 | .951 |
| AHI total, events/h | 3.05 ± 4.74 | 1.64 ± 2.17 | .548 |
| PLM index total | 38.77 ± 55.34 | 9.55 ± 17.76 | .021 |
| Arousal index total | 16.09 ± 12.09 | 11.56 ± 5.46 | .098 |
*Mann-Whitney U test. AHI = apnea-hypopnea index, IDA+RLS = iron deficiency anemia with restless legs syndrome, iRLS = idiopathic restless legs syndrome, PLM = periodic limb movement, REM = rapid eye movement, TST = total sleep time.