Table 2.
Sleep and circadian rhythm measures by ABC-C factor group.
| I-Irritability Mean (SD) | II-Social Withdrawal Mean (SD) | III-Stereotypy Mean (SD) | IV-Hyperactivity Mean (SD) | |||||
|---|---|---|---|---|---|---|---|---|
| Low | High | Low | High | Low | High | Low | High | |
| Objective sleep (ACT) | ||||||||
| TST (min) | 509.6 (63.3) | 498.2 (39.8) | 506.8 (59.5) | 501.2 (46.7) | 512.2 (54.5) | 495.6 (50.5) | 503.4 (62.4) | 504.6 (34.6) |
| SE (%) | 82.8 (7.2) | 82.3 (4.8) | 82.4(6.8) | 82.7(5.4) | 84.0 (5.5) | 81.1(6.3) | 82.2(7.1) | 83.1 (4.1) |
| SL (min) | 38.3 (23.4) | 35.3 (24.4) | 39.4 (28.1) | 34.4 (19.1) | 36.2(25.6) | 37.4 (22.2) | 36.9 (23.0) | 36.7 (25.3) |
| WASO (min) | 48.4 (26.1) | 55.2 (19.3) | 50.0 (21.23) | 53.5 (24.8) | 56.3 (26.8) | 84.0 (5.6) | 52.3 (28.0) | 51.1 (13.2) |
| LSE (min) | 383.1 (101.6) * | 324.8 (67.1) * | 370.3 (101.9) | 339.1 (77.2) | 391.7 (90.5) ** | 316.2 (73.7) ** | 354.1 (100.3) | 353.7 (75.0) |
| Circadian rhythm (ACT) | ||||||||
| IS | 0.62 (0.09) | 0.58 (0.12) | 0.61 (0.11) | 0.58 (0.10) | 0.62 (0.10) | 0.57 (0.11) | 0.59 (0.11) | 0.60 (0.10) |
| IV | 0.65 (0.08) | 0.65 (0.10) | 0.64 (0.09) | 0.66 (0.10) | 0.65 (0.08) | 0.65 (0.11) | 0.65 (0.09) | 0.65 (0.10) |
| RA | 0.93 (0.05) | 0.92 (0.04) | 0.93 (0.04) | 0.92 (0.05) | 0.93 (0.04) | 0.92 (0.05) | 0.93 (0.05) | 0.92 (0.05) |
| MSF (hh:mm) | 01:57 (01:15) | 02:17 (00:54) | 01:59 (01:13) | 02:14 (00:59) | 02:18 (00:57) | 01:56 (01:13) | 02:07 (01:05) | 02:08 (01:09) |
| Subjective sleep (ASD-adapted CSHQ) | ||||||||
| BTR | 5.4 (2.0) * | 7.0 (2.6) * | 5.7 (2.5) | 6.8 (2.2) | 6.0 (2.7) | 6.4 (2.1) | 5.6 (2.0) | 6.9 (2.7) |
| SO&D | 9.8 (2.4) | 11.1 (2.8) | 9.7 (2.9) * | 11.2 (2.2) * | 10.1 (2.9) | 10.8 (2.4) | 10.2 (2.6) | 10.8 (2.8) |
| NW | 7.6 (1.8) | 8.0 (2.0) | 7.3 (1.6) | 8.3 (2.1) | 7.4 (1.6) | 8.2 (2.1) | 7.9 (1.9) | 7.7 (1.9) |
| SDB | 3.6 (1.5) | 3.4 (1.1) | 3.5 (1.4) | 3.6 (1.3) | 3.6 (1.5) | 3.4 (1.1) | 3.8 (1.7) | 3.2 (0.7) |
| MoW | 6.8 (2.1) | 6.6 (2.3) | 6.4 (2.1) | 6.9 (2.2) | 6.6 (2.2) | 6.7 (2.1) | 6.7 (2.2) | 6.6 (2.2) |
| CSHQ total | 49.3 (7.6) | 53.4 (10.4) | 48.9 (8.8) * | 54.2 (9.2) * | 50.2 (9.4) | 52.8 (9.2) | 50.8 (9.3) | 52.2 (9.4) |
* p < 0.05, ** p < 0.01. Low, group with an ABC-C score below the median, calculated separately by factor; High, group with an ABC-C score equal or above the median, calculated separately by factor; ABC-C, Aberrant behavior checklist-community ABC-I, Factor I Irritability; ABC-II, Factor II social withdrawal; ABC-III, Factor III stereotypic behavior; ABC-IV, Factor IV Hyperactivity; ABC-total, Total score on the ABC-C; ACT, actigraphy; TST, Total Sleep Time; SE, Sleep Efficiency; SL, Sleep Latency; WASO, Wake After Sleep Onset; LSE, longest Sleep Episode; IS, Interdaily Stability; IV, Intradaily Variability; RA, Relative Amplitude; MSF, Midpoint of Sleep (average and standard deviation are ported in hh:mm). ASD-adapted Children’s sleep habits questionnaire subdomains: BTR, Bedtime Routine; SO&D, Sleep Onset and Duration; NW, Night Wakening; SDB, Sleep Disordered Breathing; MoW, Morning Wakening; CSHQ total, Children’s sleep habits questionnaire total score.