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Table 2 PSQI scores, SCL90 scores, and PSG characteristics of all participants

From: Sleep EEG characteristics associated with total sleep time misperception in young adults: an exploratory study

Variable GS (n = 10) IWHM(n = 18) IWLM (n = 19) Statistics
PSQI total score 3.5 [2.0, 6.2] 13.5 [11.5,16.3]a 11.0 [9.0, 14.0]a H = 18.882, P < 0.001
SCL-90 total score 109.5 [103.5, 129.3] 174.5 [155.8, 223.8]a 148.0 [127.5, 180.0]a H = 16.037, P < 0.001
TST (min) 394.25 ± 45.25 415.06 ± 40.20 381.95 ± 39.85 F = 3.026, P = 0.059
SPT (min) 418.60 ± 47.39 459.03 ± 42.65 431.84 ± 49.77 F = 2.837, P = 0.069
SE, % 89.27 ± 3.92 87.84 ± 7.00 86.24 ± 8.39 F = 0.626, P = 0.540
SOL (min) 11.50 [7.13, 23.38] 8.25 [4.00, 12.63] 5.50 [3.00, 10.00] H = 2.697, P = 0.260
%NREM stage1 5.00 [3.00, 6.25] 5.00 [4.00, 8.50] 4.00 [3.00, 7.00] H = 1.158, P = 0.560
%NREM stage2 59.40 ± 8.51 61.17 ± 8.61 62.16 ± 7.63 F = 0.371, P = 0.692
% SWS 13.60 ± 4.79 10.06 ± 6.49 12.37 ± 4.82 F = 1.528, P = 0.228
%REM 21.90 ± 6.61 22.61 ± 3.27 19.31 ± 5.14 F = 2.259, P = 0.116
Number of awakenings 23.50 [19.50, 29.50] 24.00 [16.00, 31.00] 19.00 [13.00, 27.00] H = 2.147, P = 0.342
Number of arousals 17.00 [8.25,20.50] 24.00 [12.75, 47.50] 26.00 [17.00, 47.00] H = 3. 730, P = 0.155
Arousal index 2.69 [1.22, 3.21] 3.71 [1.77,7.42] 4.17 [2.28,7.55] H = 3. 611, P = 0.164
Number of arousals of NREM 15.00 [8.25, 20.50] 19.50 [10.00, 46.50] 22.00 [17.00, 41.00] H = 3.233, P = 0.199
Number of arousals of REM 0.00 [0.00, 3.00] 1.00 [0.00, 3.25] 1.00 [0.00, 5.00] H = 1.339, P = 0.512
  1. GS: good sleeper; IWLM: insomnias with a low mismatch; IWHM: insomnias with a high mismatch
  2. PSQI: Pittsburgh Sleep Quality Index; TST: total sleep time; SPT: sleep period time; SE: sleep efficiency; SOL: sleep onset latency; NREM: non-rapid eye movement; SWS: slow wave sleep; REM: rapid eye movement
  3. The statistical value H represents the use of a Kruskal–Wallis non-parametric analysis among three group using a Bonferroni correction for post-hoc analysis, while the statistical value F represents the use of a one-way ANOVA using the least significant difference test for post-hoc analysis
  4. aP < 0.05 versus GS. There was no difference between the IWHW and IWLW groups