Table 1 Descriptive data of the study participants
From: Electronic device and social network use and sleep outcomes among adolescents: the EHDLA study
N (%) | Mean | SD | |
|---|---|---|---|
Total | 1101 (100.0) | ||
Age (years) | 14.11 | 1.55 | |
BMI (kg/m2) | 22.77 | 4.82 | |
Weight (kg) | 60.06 | 15.25 | |
Height (cm) | 161.88 | 8.77 | |
Sex (%) | |||
Boys | 504 (45.8) | ||
Girls | 597 (54.2) | ||
Socioeconomic status (%) | |||
Low | 236 (21.4) | ||
Medium | 583 (53.0) | ||
High | 282 (25.6) | ||
Organized sport participation (%) | |||
No | 729 (66.3) | ||
Yes | 371 (33.7) | ||
SDQ (%) | |||
Normal | 524 (73.1) | ||
Borderline | 97 (13.5) | ||
Abnormal | 96 (13.4) | ||
Adherence to the MD (%) | |||
Optimal MD | 355 (37.6) | ||
Nonoptimal MD | 589 (62.4) | ||
Sleep duration (minutes) | 488.43 | 56.03 | |
Sleep-related problems (%) | 1101 (100.0) | ||
No sleep-related problems | 452 (41.1) | ||
At least one sleep-related problem | 649 (58.9) | ||
Computer use (hour) | 2.2 | 1.2 | |
Videogames use (hour) | 2.2 | 1.3 | |
TV use (hour) | 2.3 | 1.0 | |
Cell phone use (hour) | 3.6 | 1.1 | |
Instagram (hour) | 3.5 | 1.1 | |
WhatsApp (hour) | 3.5 | 1.3 |