Table III:
Age Comparison of AES in SMS and SIBS
| P | |||
|---|---|---|---|
| Under 10 years | SMS (n=24)a,b | SIB (n=8) | (SMS vs. SIB)c |
| Gender | 11F/13M | 5F/3M | 0.6851 |
| Mean age (y) | 5.1 ± 1.8 | 5.4y ± 1.6 | 0.6785 |
| Age range (y) | 2–9 | 3–7 | |
| Total Night Sleep (mins) | 465.7 ± 48.7 | 534.2 ± 18.9 | 0.0006 |
| Sleep Efficiency (%) | 78.6 ± 17.5 | 87.8 ± 2.9 | 0.1534 |
| Sleep Onset (hh:mm) | 20:45 ± 0:59 | 21:16 ± 1:06b | 0.2251 |
| Waking Onset (hh:mm) | 06:15 ± 0:46b | 7:25 ± 1:01 | 0.0018 |
| Waking (WASO, mins) | 104.5 ± 33.2b | 74.9 ± 18.2 | 0.0235 |
| Naps (mins) | 77.3 ± 51.0 | 33.0 ± 21.1 | 0.0245 |
| Total 24-Hour Sleep (mins) | 543.0 ± 54.8 | 567.5 ± 30.0 | 0.2406 |
| 10–15 years | SMS (n=7) | SIB (n=9) | |
| Gender | 5F/2M | 5F/4M | 0.6329 |
| Mean Age (y) | 13.2 ± 1.2 | 12.3 ± 1.9 | 0.8250 |
| Age range (y) | 11 – 14 | 10.2 – 15.7 | |
| Total Night Sleep (mins) | 480.4 ± 54.8 | 511.4 ± 27.3 | 0.1594 |
| Sleep Efficiency (%) | 76.1 ± 4.9 | 89.7 ± 2.8 | 0.0001 |
| Sleep Onset (hh:mm) | 20:40 ± 0:30 | 22:36 ± 1:06 | 0.0009 |
| Waking Onset (hh:mm) | 6:44 ± 0:46 | 8:07 ± 1:07 | 0.0156 |
| Waking (WASO, mins) | 149.3 ± 28.8 | 59.1 ± 16.0 | 0.0001 |
| Naps (mins) | 61.2 ± 32.2 | 36.0 ± 50.9 | 0.2735 |
| Total 24-Hour Sleep (mins) | 541.6 ± 72.8 | 547.4 ± 73.2 | 0.8770 |
| 16 years and older | SMS (n=6) | NAd | |
| Gender | 2M/4F | ||
| Mean Age (y) | 19.9 ± 2.9 | ||
| Age range (y) | 16 – 24 | ||
| Total Night Sleep (mins) | 473.4 ± 81.8 | ||
| Sleep Efficiency (%) | 81.7 ± 9.2 | ||
| Sleep Onset (hh:mm) | 20:40 ± 0:46 | ||
| Waking Onset (hh:mm) | 6:57 ± 0:28 | ||
| Waking (WASO, mins) | 113.5 ± 49.7 | ||
| Naps (mins) | 120.16 ± 77.4 | ||
| Total 24-Hour Sleep (mins) | 593.6 ± 148.8 |
a
Mean values +/− SD are given for age and sleep parameters.
b
SMS within-group sleep differences by age significant only for waking onset (<10y and >16y; p=.0453); and WASO (<10y and 10–15y; p=.0031
c
Between-group (SMS vs. SIB) differences determined by Fisher’s exact test (gender) or unpaired 2-tailed t-test (age and AES sleep data).
d
NA= No available SIB control group for age 16y and over.
Abbreviations: M, male; F, female; y, years; mins, minutes; WASO, waking after sleep onset.