Table 1.
Main characteristic of the studied adolescents from HELENA-CSS and BRACAH studies.
| Girls | Boys | |||||||
|---|---|---|---|---|---|---|---|---|
| n | HELENA | n | BRACAH | n | HELENA | n | BRACAH | |
| mean or % (95%CI) | mean or % (95%CI) | mean or % (95%CI) | mean or % (95%CI) | |||||
| Age (years) | 1372 | 14.7 (14.6–14.8) | 540 | 16.2 (16.2–16.3) | 1154 | 14.8 (14.7–14.8) | 451 | 16.4 (16.3–16.5) |
| Weight (kg) | 1372 | 56.3 (55.8–56.9) | 540 | 56.3 (55.5–57.1) | 1154 | 62.5 (61.7–63.3) | 451 | 67.2 (66.0–68.5) |
| Height (cm) | 1372 | 162.3 (162.0–162.7) | 540 | 162.7 (162.2–163.2) | 1154 | 170.2 (169.7–170.8) | 451 | 175.2 (174.6–175.8) |
| BMI (kg/m²) | 1372 | 21.3 (21.2–21.5) | 540 | 21.3 (21.0–21.6) | 1154 | 21.4 (21.2–21.7) | 451 | 21.8 (21.5–22.2) |
| Waist circumference (cm) | 1347 | 70.4 (70.0–70.8) | 540 | 77.3 (76.5–78.1) | 1134 | 74.2 (73.7–74.8) | 451 | 80.4 (79.5–81.4) |
| Waist to height | 1347 | 0.35(0.34–0.35) | 540 | 0.48 (0.47–0.48) | 1134 | 0.36 (0.36–0.37) | 451 | 0.46 (0.45–0.46) |
| Sleep time | 1350 | 390 | 1121 | 331 | ||||
| ≥8 hours/day | 66.2 (63.7–68.7) | 51.3 (46.0–56.0) | 67.2 (64.4–70.0) | 57.1 (52.0–62.0) | ||||
| <8 hours/day | 33.8 (31.3–36.3) | 48.7 (44.0–54.0) | 32.8 (30.1–35.6) | 42.9 (38.0–48.0) | ||||
| Skip breakfast | 1372 | 540 | 1154 | 451 | ||||
| no | 55.5 (52.8–58.1) | 62.2 (58.0–66.0) | 64.1 (61.4–67.0) | 65.4 (61.0–70.0) | ||||
| yes | 44.5 (42.0–47.2) | 37.8 (34.0–42.0) | 35.9 (33.1–38.6) | 34.6 (30.0–39.0) | ||||
| Sedentary behaviour | 1372 | 540 | 1154 | 451 | ||||
| ≤2 hours/day | 42.4 (39.8–45.0) | 3.0 (2.0–4.0) | 21.7 (19.3–24.0) | 5.3 (3.0–7.0) | ||||
| >2 hours/day | 57.6 (55.0–60.2) | 97.0 (96.0–98.0) | 78.3 (76.0–80.7) | 94.7 (93.0–97.0) | ||||
| Physical activity | 1372 | 540 | 1154 | 451 | ||||
| ≥60 min /day | 83.9 (82.0–85.8) | 30.6 (27.0–34.0) | 85.3 (83.2–87.3) | 31.7 (27.0–36.0) | ||||
| <60 min/day | 16.1 (14.2–18.1) | 69.4 (66.0–73.0) | 14.7 (12.7–16.8) | 68.3 (64.0–73.0) | ||||
| Education mother | 1322 | 533 | 1091 | 449 | ||||
| Low education | 7.3 (5.9–8.7) | 8.4 (6.1–10.8) | 7.6 (6.0–9.2) | 6.5 (4.2–8.7) | ||||
| Secondary low education | 24.1 (21.7–26.4) | 24.8 (21.1–28.4) | 25.6 (23.0–28.2) | 25.2 (21.1–29.2) | ||||
| Secondary high education | 33.4 (30.8–36.0) | 42.8 (38.6–47.0) | 31.3 (28.6–34.1) | 42.8 (38.2–47.4) | ||||
| University degree | 35.3 (32.7–38.0) | 24.0 (20.4–27.7) | 35.5 (32.6–38.3) | 25.6 (21.6–29.7) | ||||
HELENA-CSS: Healthy Lifestyle in Europe by Nutrition in Adolescence cross-sectional study, BRACAH study: Brazilian Cardiovascular Adolescent Health study, 95%CI: confidence interval.