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Table 3 Sleep macrostructural, respiratory parameters and PLM nocturnal evaluation

From: Migraine and periodic limb movement disorders in sleep in children: a preliminary case–control study

  Migraine (N = 34) Control (N = 51) Mann–Whitney
  Mean Std.Dev. Mean Std.Dev. U p
TIB-min 467.3235 46.46502 595.1961 86.57985 126.00 0.000
SPT-min 445.1765 47.29980 562.4412 80.85330 147.00 0.000
TST-min 416.3529 59.19837 534.3824 75.29167 135.00 0.000
SOL-min 14.6324 11.61524 22.7843 21.93109 643.5 NS
FRL-min 142.2206 53.99385 125.2941 50.83268 706.00 NS
SS-h 9.2824 2.52976 8.7686 3.44078 74.5 NS
AWN-h 3.8971 2.59364 2.1784 1.79881 527.5 0.008
SE % 88.8441 7.41261 90.0216 5.47640 845.5 NS
WASO-spt (%) 6.7147 7.16139 4.8471 4.08545 779.5 NS
S1-spt (%) 1.7882 2.07259 2.8000 3.47338 621.00 NS
S2-spt (%) 38.9588 9.10265 43.6451 24.84550 797.00 NS
SWS-spt (%) 34.7735 10.46907 30.9490 9.97830 698.5 NS
REM-spt (%) 17.7382 6.68839 21.1961 5.43463 620.5 NS
AHI 0.9512 0.35743 0.8463 0.29067 675.00 NS
ODI 0.3821 0.26759 0.3837 0.32744 813.5 NS
PLMI 18.3194 24.850 2.5333 1.11187 65.5 0.000
  1. Table 3 shows the mean differences in sleep macrostructure, respiratory (AHI, ODI) and PLM index (PLMI) between the migraine and control group, calculated with t-Test analysis.
  2. TIB time in bed, SPT sleep period time, TST total sleep time, SOL sleep onset latency, FRL first REM sleep latency, SS stage shifts, AWN awakenings, SE sleep efficiency, WASO wake time after sleep onset, S1 sleep stage 1, S2 sleep stage 2, SWS slow-wave sleep, REM rapid eye movement sleep percentage.
  3. AHI apnea/hypopnea index (normal value≤1/h), ODI oxygen desaturation index (normal value≤ 1/h), PLMI periodic limb movements index (normal value≤ 5%). NS not significant.