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Table 3 Polysomnography results

From: Sleep problems among children with Fetal Alcohol Spectrum Disorders (FASD)- an explorative study

  FASD patients (n = 19) Control group (n = 5) PSG laboratory control group (n = 105) p
Age, years 7.1 (5.5; 9.3) 7.5 (6.7; 8.7) 6.5 (4.9; 8.9) 0.7
Male sex, n (%) 8 (42) 3 (60) 66 (63) 0.2
Aquisition time, min 594 (578; 607) 582 (570; 584) 591 (572; 603) 0.4
TIB, min 548 (530; 569) 538 (529; 544) 543 (524; 563) 0.8
TST, min 464 (434; 507) 449 (446; 480) 466 (433; 494) 0.9
SPT, min 526 (502; 543) 512 (509; 534) 517 (494; 537) 0.8
Sleep efficiency, %TIB 86.4 (78.4; 91.1) 82.6 (81.4; 82.9) 86.1 (79.7; 92.8) 0.8
Sleep latency, min 22.5 (7.4; 28,6) 18.9 (11.0; 30.2) 16.0 (5.5; 26.1) 0.5
Stage shifts, n 86 (64; 97) 75 (57; 98) 67 (54; 83) 0.03 a
W, %SPT 9.7 (3.4; 14.7) 12.3 (11.9; 16.5) 9.8 (4.2; 15.2) 0.6
N1, %TST 4.3 (2.6; 5.7) 3.2 (3.0; 3.7) 2.4 (1.8; 3.6) 0.005 a
N2, %TST 53.7 (47.6; 58.0) 54.4 (47.4; 57.3) 50.4 (46.2; 53.5) 0.1
N3, %TST 27.5 (22.1; 31.5) 26.8 (24.6; 29.8) 29.0 (25.0; 32.5) 0.2
REM, %TST 15.1 (14.5; 19.4) 17.8 (17.4; 19.9) 17.6 (14.9; 20.6) 0.4
N3 + REM, %TST 42.5 (39.5; 46.5) 42.5 (37.0; 50.5) 46.7 (42.1; 50.5) 0.03 a
Arousal index, events/h 6.9 (5.9; 8.5) 8.5 (7.7; 9.6) 5.1 (4.1; 6.2) < 0.0001 a,b
Total apnea index, events/h 1.0 (0.7; 1.8) 2.1 (0.8; 5.4)   0.3
Central apnea index, events/h 1.0 (0.5; 1.8) 2.0 (0.8; 4.3)   0.3
Obstructive apnea index, events/h 0 (0; 0.2) 0 (0; 0.6)   0.6
Mixed apnea index, events/h 0 (0; 0.1) 0.1 (0; 0.1)   0.6
Hypopnea index, events/h 0.5 (0; 1.2) 0.8 (0.2; 1.6)   0.5
Obstructive apnea hipopnea Index, events/h 0.7 (0.2; 1.3) 0.98 (0.25; 2.75)   0.6
Respiratory disturbance index, events/h 1.7 (1.0; 3.2) 2.9 (0.8; 7.0)   0.6
Minimal SaO2, % 91 (90; 92) 92 (86; 92)   0.5
Average SaO2, % 97 (96; 97) 97 (96; 97)   1
Oxygen desaturation index, events/h 1.8 (0.9; 2.9) 2.2 (0.8; 8.1)   0.5
  1. a significant difference between FASD patients and the PSG control group
  2. b significant difference between the control group and the PSG control group