Table 1 Characteristics of participants (n = 505)
Characteristics | N (%) | 95% CI |
|---|---|---|
Age (years)a | 14.16 ± 1.45 |  |
Sex | ||
 Male | 228 (45.2) |  |
 Female | 277 (54.9) |  |
Year of studies | ||
 First | 110 (21.8) |  |
 Second | 106 (21.0) |  |
 Third | 97 (19.2) |  |
 Fourth | 100 (19.8) |  |
 Fifth | 92 (18.2) |  |
BMI (categorized) | ||
 Underwight | 35 (7.0) |  |
 Normal | 322 (64.1) |  |
 Overweight | 101 (20.1) |  |
 Obese | 44 (8.8) |  |
Alcohol consumptionb | ||
 Every in your life | 145 (28.7) |  |
 In the last year | 93 (26.1) |  |
 In the last month | 46 (13.2) |  |
Tobacco useb | ||
 Ever in your life | 8 (1.6) |  |
 In the last year | 6 (1.9) |  |
 In the last month | 4 (1.2) |  |
Failing courses | ||
 No | 347 (69.1) |  |
 Yes | 155 (30.9) |  |
Self-esteema | 22.47 ± 3.56 |  |
Physical activityc | 1.89 (1.58–2.31) |  |
Eating Disorder | ||
 No | 417 (82.6) |  |
 Yes | 88 (17.4) |  |
Insomnia | ||
 Absence of clinical insomnia | 314 (62.2) |  |
 Subclinical insomnia | 169 (33.5) |  |
 Moderate clinical insomnia | 18 (3.6) |  |
 Severe clinical insomnia | 4 (0.8) |  |
Use of devices to connect to the Internet (hours) | ||
 < 1 h | 30 (5.9) |  |
 1 to 2 h | 73 (14.5) |  |
 2 to 3 h | 86 (17.0) |  |
 3 to 4 h | 70 (13.9) |  |
 > 4 h | 246 (48.7) |  |
Internet use for gaming | ||
 No | 263 (52.1) |  |
 Yes | 242 (47.9) |  |
Use of social networks | ||
 No | 364 (72.1) |  |
 Yes | 141 (27.9) |  |
Internet use for gaming | ||
 No | 393 (77.8) |  |
 Yes | 112 (22.2) |  |
Use of social networksb | ||
 Facebook | 341 (67.5) |  |
 Instagram | 280 (55.6) |  |
 Twitter | 130 (25.8) |  |
 Whatsapp | 363 (72.0) |  |
 Snapchat | 64 (12.7) |  |
 Tinder | 13 (2.6) |  |
 Tiktok | 279 (55.4) |  |
Internet addiction disorder | ||
 Normal | 374 (74.1) | 69.9—77.2 |
 Mild | 112 (22.2) | 18.6—26.1 |
 Moderate | 16 (3.2) | 1.9—7.6 |
 Severe | 3 (0.6) | 0.1—3.3 |
Anxiety | ||
 Mild | 365 (72.3) | 68.8—75.0 |
 Moderate | 93 (18.4) | 15.9—21.5 |
 Severe | 47 (9.3) | 6.4—14.1 |
Depression | ||
 Minimal | 158 (31.3) | 27.9—34.7 |
 Mild | 150 (29.7) | 26.2—33.2 |
 Moderate | 24 (4.8) | 2.9—7.1 |
 Severe | 173 (34.3) | 30.9—37.7 |