Table 1 Characteristics of the whole sample and classified by screen time categories (n = 33,900). ERICA 2013/2014
|  | All sample (n = 33,900) | Screen time categories | ||
|---|---|---|---|---|
≤ 2 h/day (n = 14,526) | 3 to 5 h/day (n = 12,902) | ≥ 6 h/day (n = 6,472) | ||
| Â | % (95% CI) | |||
Overall |  | 40.5 (38.6–42.3) | 39.0 (37.5–40.6) | 20.5 (19.5–21.5) |
Sexa | ||||
 Female | 59.4 (58.9–60.0) | 60.4 (59.6–61.2) | 58.6 (57.8–59.5) | 59.0 (58.7–60.2) |
 Male | 40.6 (40.0–41.1) | 39.6 (38.8–40.4) | 41.4 (40.5–42.2) | 41.0 (39.8–42.2) |
Age groupa, years | ||||
 12–13 | 27.7 (27.2–28.2) | 29.4 (28.6–30.1) | 25.9 (25.2–26.7) | 27.3 (26.3–28.4) |
 14–15 | 36.3 (35.7–36.8) | 33.9 (33.2–34.7) | 37.3 (36.4–38.1) | 39.4 (38.2–40.6) |
 16–17 | 36.1 (35.6–36.6) | 36.7 (35.9–37.5) | 36.8 (35.9–37.6) | 33.2 (32.1–34.4) |
Socioeconomic level, tertiles | ||||
 1st (lowest) | 35.1 (33.3–37.0) | 38.2 (35.9–40.7) | 32.4 (30.0–35.0) | 34.1 (31.1–37.2) |
 2nd | 34.2 (33.1–35.3) | 34.0 (32.0–36.2) | 33.8 (31.7–36.0) | 35.2 (32.7–37.7) |
 3rd | 30.7 (28.7–32.8) | 27.7 (25.1–30.5) | 33.8 (31.0–36.7) | 30.7 (27.4–34.3) |
Skin color | ||||
 White | 41.1 (39.2–43.1) | 39.3 (37.0–41.7) | 41.9 (39.4–44.5) | 43.1 (39.5–46.8) |
 Black | 7.1 (6.3–8.0) | 7.6 (6.4–9.0) | 6.6 (5.5–7.9) | 7.2 (6.1–8.5) |
 Brown | 49.2 (47.3–51.1) | 50.7 (48.5–52.8) | 49.0 (46.3–51.6) | 46.8 (43.6–50.1) |
 Yellow/indigenous | 2.5 (2.1–3.1) | 2.4 (1.9–3.0) | 2.6 (2.0–3.3) | 2.8 (2.1–3.8) |
Total energy intake, kcal | 2312 (2249–2376) | 2275 (2167–2384) | 2319 (2277–2362) | 2372 (2289–2455) |
Active (≥ 420 min/week) | 37.8 (36.7–38.8) | 39.3 (37.5–41.1) | 38.3 (36.7–40.0) | 33.8 (30.8–36.8) |
unhealthy snacks intake in front of TV | ||||
 No | 14.8 (14.0–15.7) | 19.9 (18.4–21.5) | 12.4 (11.0–14.0) | 9.5 (7.7–11.7) |
 Yes | 85.2 (84.3–86.0) | 80.1 (78.5–81.6) | 87.6 (86.0–89.0) | 90.5 (88.3–92.3) |
unhealthy snacks intake in front of PC/video game | ||||
 No | 36.2 (34.5–37.9) | 51.5 (49.7–53.3) | 28.6 (26.4–31.0) | 20.3 (18.1–22.7) |
 Yes | 63.8 (62.1–65.5) | 48.5 (46.7–50.3) | 71.4 (69.0–73.6) | 79.7 (77.3–81.9) |
unhealthy snacks intake in front of all screens | ||||
 No | 10.2 (9.4–11.2) | 15.7 (14.3–17.3) | 7.3 (6.0–8.9) | 5.0 (3.5–7.0) |
 Yes | 89.8 (88.8–90.6) | 84.3 (82.7–85.7) | 92.7 (91.1–94.0) | 95.0 (93.0–96.5) |
Components of MetSb | ||||
 High waist circumference | 12.7 (11.6–13.9) | 11.4 (10.2–12.6) | 13.4 (11.7–15.3) | 14.0 (12.0–16.4) |
 High triglycerides | 4.5 (4.0–5.1) | 4.2 (3.7–4.8) | 4.4 (3.7–5.2) | 5.4 (4.1–7.0) |
 High blood glucose | 4.0 (3.5–4.7) | 4.2 (3.3–5.3) | 4.4 (3.5–5.5) | 3.0 (2.4–3.8) |
 High blood pressure | 8.3 (7.7–9.0) | 7.6 (6.7–8.6) | 8.4 (7.5–9.3) | 9.4 (7.5–11.7) |
 Low HDL – c | 32.5 (30.0–35.1) | 32.5 (29.9–35.3) | 32.0 (29.0–35.1) | 33.6 (29.9–37.4) |