Table 2. Polysomnography findings.
| Parameter | Control (A) (n=16) | RLS baseline (B) (n=12) | RLS follow-up (C) (n=12) | p | ||
|---|---|---|---|---|---|---|
| A vs. B* | B vs. C† | A vs. C‡ | ||||
| Total sleep time (min) | 394.94±51.65 | 334.88±91.03 | 396.16±42.05 | 0.100 | 0.099 | 0.909 |
| Sleep latency (min) | 7.41±4.86 | 20.29±30.95 | 7.38±5.00 | 0.371 | 0.091 | 0.945 |
| REM latency (min) | 96.97±40.08 | 117.25±42.95 | 79.00±32.94 | 0.090 | 0.015 | 0.241 |
| WASO (min) | 45.84±31.56 | 70.10±49.45 | 47.80±29.42 | 0.110 | 0.117 | 0.802 |
| Sleep efficiency (%) | 87.98±7.28 | 77.78±17.97 | 87.76±7.73 | 0.082 | 0.019 | 0.837 |
| Stage N1 (%) | 18.03±9.54 | 20.57±9.59 | 16.82±6.78 | 0.324 | 0.182 | 0.945 |
| Stage N2 (%) | 43.89±7.48 | 39.30±12.25 | 37.93±12.77 | 0.347 | 0.556 | 0.302 |
| Stage N3 (%) | 15.39±7.54 | 17.99±15.07 | 21.30±13.41 | 0.945 | 0.480 | 0.280 |
| Stage REM (%) | 22.70±4.90 | 22.14±6.54 | 23.95±7.35 | 0.599 | 0.530 | 0.537 |
| Apnea/hypopnea index | 2.21±3.45 | 3.32±4.41 | 2.61±3.53 | 0.280 | 0.695 | 0.423 |
| Arousal index | 18.08±9.24 | 20.68±9.20 | 16.20±6.72 | 0.174 | 0.182 | 0.732 |
| PLMS index | 3.08±4.07 | 23.80±26.00 | 5.29±4.12 | 0.004 | 0.006 | 0.121 |
| PLMS arousal index | 1.77±2.37 | 6.53±9.24 | 2.34±2.50 | 0.133 | 0.169 | 0.478 |
Data are mean±standard deviation values.
*Control vs. RLS baseline in Mann-Whitney U-tests, †RLS baseline vs. RLS follow-up in Wilcoxon signed-rank tests, ‡Control vs. RLS follow-up in Mann-Whitney U-tests.
PLMS: periodic leg movements during sleep, REM: rapid eye movement, RLS: restless legs syndrome, WASO: wakefulness after sleep onset.