Table 2.
Demographic and anthropometric characteristics and blood pressure of the study adolescents according to birth weight (BW)
| Variables | Total | Low BW ≤ 2.500g | Normal BW > 2.500g and < 4.000g | High BW ≥ 4.000g |
| N(%) | 250 | 20 (8.0) | 202 (80.8) | 28 (11.2) |
| Age, mean ± sd | 13.7±2.0 | 14.3±2.1 | 13.7±2.1 | 13.7±1.9 |
| BW, mean ± sd | 3.292.3±623.8 | 2.027.0±481.4 | 3.271.1±358.9 | 4.348.8±346.0 |
| Gender n (%) | ||||
| Male | 97 (38.8) | 5(25.0) | 80 (39.6) | 12 (42.9) |
| Female | 153 (61.2)* | 15(75.0) | 122 (60.4)* | 16 (57.1) |
| Skin color n (%) | ||||
| White | 116(46.4) | 8(40.0) | 99(49.0) | 9(32.1) |
| Non-white | 134(53.6) | 12(60.0) | 103(51.0) | 19(67.9) |
| School n (%) | ||||
| Public | 150(60)† | 16(10.7) | 114(76.0) | 20(13.3) |
| Private | 100(40) | 4(4.0) | 88(88.0) | 8(8.0) |
| Anthropometric data and blood pressure (mean ± sd) | ||||
| BMI (Kg/ M²) | 24.0±3.7 | 24.4±3.4 | 24.6±4.0 ‡ | 26.0±4.0 ‡ |
| WC (cm) | 79.2±9.6 | 80.3±9.2 | 78.5±9.4 ¶ | 83.3±10.1¶ |
| SBP (mmHg) | 109.5±12.0 | 112.0±11.1 | 108.6±12.0 # | 113.5±12.3# |
| DBP (mmHg) | 68.7±9.3 | 69.4±9.3 | 68.1±9.0 ** | 72.5±10.8** |
| BMI Z-score | 1.98±1.04 | 1.97±1.01 | 1.90±1.01 | 2.52±1.04 |
BMI: body mass index; WC: waist circumference; SBP: systolic blood pressure; DBP: diastolic blood pressure. Statistics: *Male vs Female: Total, p<0.001, normal BW, p<0.006; † public vs private school: Total, p=0.003; Clinical data (high BW vs normal BW): ‡ p=0.002; ¶ p=0.013; # p=0.047; ** p=0.017.