Table 1.
Demographic and anthropometric characteristics and blood pressure of the study adolescents according to gender
| Variables | Total | Male | Female | |
| N(%) | 250 (100) | 97 (38.8) | 153 (61.2)* | |
| Age (mean ± sd years) | 13.7 ± 2.0 | 13.4 ± 2.0 | 14.0 ± 2.1† | |
| Birth weight (BW) | ||||
| BW (mean ± sd kg) | 3292.3 ± 623.8 | 3388.4 ± 569.4 | 3231.3 ± 650.4‡ | |
| BW Z-score | -0.0645 ± 1.35 | -0.0036 ± 1.29 | -0.1031 ± 1.38 | |
| Low BW | 20 (8.0) | 5 (5.2) | 15 (9.8) | |
| Normal BW | 202 (80.8) | 80 (82.5) | 122 (79.7) | |
| High BW | 28 (11.2) | 12 (12.4) | 16 (10.5) | |
| Skin color | ||||
| White | 116 (46.4) | 45 (46.4) | 71 (46.4) | |
| Non-white | 134 (53.6) | 52 (53.6) | 82 (53.6) | |
| School | ||||
| Public | 150 (60) | 52 (53.6) | 98 (64.1) | |
| Private | 100 (40) | 45 (46.4) | 55 (35.9) | |
| Anthropometric data and blood pressure | ||||
| BMI (Kg/m2) | 24.0 ± 3.7 | 24.4±4.0 | 23.8±3.4 | |
| BMI Z-score | 1.98 ±1.04 | 2.29 ±1.18 | 1.78 ± 0.89α | |
| WC (cm) | 79.2±9.6 | 81.1±10.6 | 78.0±8.7 // | |
| SBP (mmHg) | 109.5±12.0 | 112.5±12.8 | 107.5±11.1 # | |
| DBP (mmHg) | 68.7±9.3 | 69.2±9.3 | 68.3 ± 9.3 | |
Data: (N [%]). BMI: body mass index; WC: waist circumference; SBP: systolic blood pressure; DBP: diastolic blood pressure. Statistics: Male vs Female;*p = 0.001; †p=0.026, ‡ p = 0.046; αp = 0.000; //p = 0.010; # p = 0.002.