Table 8.
Sleep parameters in adolescents aged 15–18 with social media addiction (SMA) verified with the Social Media Disorder Scale (SMDS).
| Sleep Parameters |
Age 15–18 лeт | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Boys (n = 1141) | Girls (n = 1262) | |||||||||
| No SMA n = 1113 |
SMA n = 28 |
p | d | U | No SMA n = 1144 |
SMA n = 118 |
p | d | U | |
| Bedtime weekdays (in hours) |
23 (22–24) |
24 (23–01) |
0.002 | 0.175 | 10,502 | 23 (22–24) |
23 (23–24) |
0.081 | 0.094 | 61,213 |
| Waking up weekdays (in hours) |
7 (6–7) |
7 (6–7) |
0.824 | 0.013 | 14,597 | 6 (6–7) |
6 (6–7) |
0.662 | 0.022 | 66,645 |
| Total sleep weekdays (in hours) |
7.5 (6.7–8.2) |
6.9 (5.5–7.8) |
0.008 | 0.158 | 10,485 | 7.2 (6.3–7.9) |
7.0 (5.9–7.8) |
0.096 | 0.094 | 60,999 |
| Sleep onset latency (in minutes) |
10 (7–20) |
10 (9–20) |
0.482 | 0.044 | 11,223 | 10 (10–20) |
15 (10–27.5) |
0.053 | 0.111 | 51,979 |
| Frequency of night awakenings (in points) |
0 (0–1) |
1.5 (0–2) |
0.004 | 0.140 | 11,472 | 1 (0–2) |
1 (1–2) |
<0.001 | 0.223 | 52,376 |
| PDSS score (in points) |
10 (7–15) |
16 (12.5–22.5) |
<0.001 | 0.297 | 7061 | 13 (10–17) |
17 (13–21) |
<0.001 | 0.356 | 45,302 |
Note: Time is expressed in 24–hour clock time. AIU—adaptive Internet use; MIU—maladaptive Internet use; IA—Internet addiction. Data are presented as medians (25–75% quartiles). The Mann–Whitney U test was used. d—effect size (Cohen’s d) for Mann–Whitney U test calculated according to recommendations Fritz, Morris & Richler [45] with the public domain software https://www.psychometrica.de/effect_size.html (accessed on 2 October 2021).