Table 1.
Biometric characteristics and socio-demographic data of participants segmented by sex.
| All (n = 1,330) |
Boys (n = 651) |
Girls (n = 679) |
|||||
|---|---|---|---|---|---|---|---|
| Variables | Mean | SD/% | Mean | SD/% | Mean | SD/% | p |
| Age (years) | 13.22 | 1.75 | 13.22 | 1.787 | 13.22 | 1.72 | 0.965 |
| Weight (kg) | 52.31 | 13.40 | 54.65 | 14.81 | 50.06 | 11.44 | <0.001 |
| Height (m) | 1.59 | 0.11 | 1.61 | 0.13 | 1.57 | 0.08 | <0.001 |
| BMI (kg/m2) | 20.47 | 3.97 | 20.70 | 3.91 | 20.25 | 4.03 | 0.037 |
| Mother’s level of mother’s (%) | |||||||
| No education | 4.8% | 5.0% | 4.7% | <0.001 | |||
| Primary (EGB) | 10.2% | 10.6% | 10.0% | ||||
| Secondary (BUP) | 14.1% | 11.0% | 17.4% | ||||
| Professional training | 13.1% | 13.1% | 13.3% | ||||
| University | 36.6% | 35.5% | 38.4% | ||||
| Do not know | 20.2% | 24.9% | 16.2% | ||||
| Weekly PA (average) | 4.01 | 1.76 | 4.30 | 1.81 | 3.73 | 1.67 | <0.001 |
| Academic performance | 6.89 | 1.55 | 6.76 | 1.53 | 7.02 | 1.55 | 0.007 |
| Bullying victimization | |||||||
| Never | 198 | 14.9% | 112 | 17.2% | 86 | 12.7% | 0.085 |
| Occasionally | 703 | 52.9% | 327 | 50.2% | 376 | 55.4% | |
| Once or twice/month | 322 | 24.2% | 156 | 24.0% | 166 | 24.4% | |
| Once/week | 83 | 6.2% | 46 | 7.1% | 37 | 5.4% | |
| More than once/week | 24 | 1.8% | 10 | 1.5% | 14 | 2.1% | |
| Bullying aggression | |||||||
| Never | 362 | 27.2% | 162 | 24.9% | 200 | 29.5% | 0.007 |
| Occasionally | 767 | 57.7% | 371 | 57.0% | 396 | 58.3% | |
| Once or twice/month | 156 | 11.7% | 93 | 14.3% | 63 | 9.3% | |
| Once/week | 37 | 2.8% | 23 | 3.5% | 14 | 2.1% | |
| More than once/week | 8 | 0.6% | 2 | 0.3% | 6 | 0.9% | |
| Cyberbullying victimization | |||||||
| Never | 582 | 43.8% | 304 | 46.7% | 278 | 40.9% | 0.101 |
| Occasionally | 664 | 49.9% | 311 | 47.8% | 353 | 52.0% | |
| Once or twice/month | 61 | 4.6% | 26 | 4.0% | 35 | 5.2% | |
| Once/week | 21 | 1.6% | 8 | 1.2% | 13 | 1.9% | |
| More than once/week | 2 | 0.2% | 2 | 0.3% | 0 | 0.0% | |
| Cyberbullying aggression | |||||||
| Never | 755 | 56.8% | 363 | 55.8% | 392 | 57.7% | 0.368 |
| Occasionally | 515 | 38.7% | 255 | 39.2% | 260 | 38.3% | |
| Once or twice/month | 37 | 2.8% | 23 | 3.5% | 14 | 2.1% | |
| Once/week | 23 | 1.7% | 10 | 1.5% | 13 | 1.9% | |
| More than once/week | 0 | 0.0% | 0 | 0.0% | 0 | 0.0% | |
| Cognitive and metacognitive strategies | |||||||
| Rehearsal | 5.28 | 1.17 | 5.08 | 1.16 | 5.47 | 1.13 | <0.001 |
| Elaboration | 4.91 | 1.15 | 4.74 | 1.14 | 5.08 | 1.14 | <0.001 |
| Organization | 5.13 | 1.38 | 4.76 | 1.38 | 5.49 | 1.22 | <0.001 |
| Critical Thinking | 4.63 | 1.19 | 4.58 | 1.16 | 4.67 | 1.22 | 0.139 |
| Metacognitive Self-regulation | 5.05 | 0.93 | 4.89 | 0.95 | 5.19 | 0.89 | <0.001 |
| Overall strategies | 5.00 | 0.97 | 4.81 | 0.96 | 5.18 | 0.93 | <0.001 |
Data are presented as mean for continuous variables and frequency (%) for categorical variables. BMI = Body Mass Index; SD = Standard Deviation.