Table 1.
Age, sleep architecture, and leg movement activity parameters.
| Parameter | Individuals Without Disorders (n = 33) | RSD (n = 32) | RLS (n = 32) | Kruskal-Wallis ANOVA | Effect Size |
Post Hoc (P <) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median | IQ Range | Median | IQ Range | Median | IQ Range | H(2,95) | P < | Cohen’s d | 1 vs 2 | 2 vs 3 | 1 vs 3 | |
| Age, years | 7.4 | 6–14 | 10.0 | 8–13.5 | 10.0 | 8–14 | 1.324 | NS | 0.049 | |||
| Time in bed, min | 512.5 | 473.5–555 | 508.5 | 480.3–531.8 | 515.0 | 463.8–558.5 | 0.547 | NS | −0.191 | |||
| Sleep period time, min | 474.0 | 450–520.5 | 478.3 | 441.5–496.5 | 484.5 | 443–535.5 | 1.839 | NS | −0.306 | |||
| Total sleep time, min | 457.0 | 422–505 | 422.5 | 375.8–468 | 460.3 | 392.3–517 | 7.503 | .023 | −0.741* | 0.023 | NS | NS |
| Sleep latency, min | 20.0 | 9–38.5 | 24.8 | 11.5–43.3 | 19.0 | 9.5–31.8 | 2.477 | NS | 0.137 | |||
| REM sleep latency, min | 89.5 | 60.5–115 | 143.5 | 107.3–182.5 | 152.8 | 100.3–213.3 | 18.361 | .001 | 0.781* | 0.001 | NS | 0.00043 |
| Stage shifts/h | 9.4 | 7.1–11.7 | 11.5 | 8.2–14.2 | 10.3 | 8.4–13.1 | 4.186 | NS | 0.555* | |||
| Awakenings/h | 2.7 | 1.1–4.7 | 4.2 | 3.4–6.6 | 3.5 | 1.6–5.5 | 9.290 | .0096 | 0.800† | 0.0074 | NS | NS |
| Sleep efficiency, % | 91.8 | 88.4–94.2 | 85.8 | 75–91.6 | 90.4 | 83.8–93.9 | 9.888 | .0071 | −0.820† | 0.005 | NS | NS |
| Stage W, % | 3.8 | 1.5–5.7 | 8.2 | 4–16.7 | 5.0 | 1.7–8.4 | 14.265 | .0008 | 0.853† | 0.0005 | NS | NS |
| Stage N1, % | 4.7 | 3.1–5.8 | 6.0 | 3.5–8.9 | 4.7 | 3.3–6.7 | 4.586 | NS | 0.600* | |||
| Stage N2, % | 47.9 | 44.5–53 | 42.4 | 37.3–53.1 | 45.5 | 38.6–50.3 | 2.411 | NS | −0.322 | |||
| Stage N3, % | 22.3 | 19.2–26 | 23.3 | 19.4–26 | 23.9 | 19.7–31.1 | 1.637 | NS | −0.028 | |||
| Stage R, % | 21.7 | 17.2–26.4 | 14.6 | 8.6–19.3 | 17.4 | 11.9–20.6 | 20.764 | .000001 | −1.216† | 0.000034 | NS | 0.0039 |
| PLMS index, n/h | 1.1 | 0.3–2.1 | 0.0 | 0–0.7 | 2.2 | 1.1–6.3 | 27.534 | .000001 | −0.229 | 0.007 | 0.000001 | NS |
| Total LMS index, n/h | 12.2 | 9–16.5 | 0.0 | 0–12.4 | 19.2 | 13.5–26.9 | 34.810 | .000001 | −0.809† | 0.0039 | 0.000001 | 0.024 |
*Medium effect size. †Large effect size. ANOVA = analysis of variance, IQ = interquartile, LMS = leg movements during sleep, NS = not significant, PLMS = periodic leg movements during sleep.