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Table 4 Associations between sleep architecture (median) and parasomnias (n = 480)

From: Parasomnias and sleep disordered breathing in Caucasian and Hispanic children – the Tucson children's assessment of sleep apnea study

  SW ST TR EN
  Yes No p Yes No p Yes No p Yes No p
Total sleep time (min) 498 502 0.79 489 503 0.48 510 502 0.48 522 500 0.05*
Total time in bed (min) 562 558 0.52 548 561 0.32 563 558 0.40 572 558 0.22
Sleep efficiency (%) 89.8 91.6 0.19 91.6 91.4 0.48 92.1 91.4 0.56 92.6 91.3 0.09
Sleep latency (min) 20 11 0.07 12 11 0.92 8 11 0.19 7 11 0.008*
REM latency (min) 137 130 0.63 145 130 0.35 135 130 0.68 145 129 0.29
Stage 1 (min) 17 19 0.78 16 19 0.42 21 19 0.37 17 19 0.59
Stage 1 (%) 3.4 3.8 0.81 3.1 3.8 0.43 3.8 3.8 0.38 3.2 3.8 0.39
Stage 2 (min) 264 259 0.58 262 260 0.93 249 260 0.93 277 258 0.05*
Stage 2 (%) 53 52.3 0.69 51.6 52.4 0.70 50.7 52.5 0.26 52.6 52.4 0.54
Stage 3/4 (min) 101 103 0.93 101 103 0.55 99.5 103 0.73 109 102 0.13
Stage 3/4 (%) 20.3 21.6 0.79 20.3 21.7 0.80 21.0 21.6 0.94 22.6 21.6 0.63
REM (min) 113 110 0.89 110 111 0.95 124 110 0.48 114 110 0.51
REM (%) 21.0 21.8 0.61 21.9 21.7 0.83 21.5 21.7 0.90 22.3 21.7 0.80
Shifts stage 2 to stage 1 2 3 0.78 4 3 0.06 2 3 0.73 4 3 0.14
Shifts stage 3 to stage 2 4 7 0.78 7 7 0.98 10 7 0.08 7 7 0.77
Shifts REM to stage 1 14 12 0.51 15.5 11.0 0.006* 14.5 11 0.05* 150.5 11.0 0.19
Shifts REM to stage 2 32 24 0.40 22.5 24 0.35 23.5 24 0.81 26.5 24.0 0.16
Shifts REM to stage 3/4 6 5 0.40 8 5 0.02* 5 5 0.66 6.5 5 0.48
Shifts REM to wake 4 6 0.19 7 6 0.39 7 6 0.01* 7 6 0.50
Total stage shifts 77 66 0.52 78.5 65 0.005* 79.5 66 0.06 72 66 0.08
Total arousals 29 27 0.24 26 27 0.39 25 27 0.24 27 27 0.48
Arousal index 3.5 3.3 0.39 3.2 3.3 0.58 3.1 3.3 0.05* 3.3 3.3 0.82
  1. *p ≤ 0.05.