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Table 1 Characteristics of the whole sample and classified by screen time categories (n = 33,900). ERICA 2013/2014

From: Unhealthy snack intake modifies the association between screen-based sedentary time and metabolic syndrome in Brazilian adolescents

 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)
 % (95% CI)
Overall 40.5 (38.6–42.3)39.0 (37.5–40.6)20.5 (19.5–21.5)
Sexa
 Female59.4 (58.9–60.0)60.4 (59.6–61.2)58.6 (57.8–59.5)59.0 (58.7–60.2)
 Male40.6 (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
 12–1327.7 (27.2–28.2)29.4 (28.6–30.1)25.9 (25.2–26.7)27.3 (26.3–28.4)
 14–1536.3 (35.7–36.8)33.9 (33.2–34.7)37.3 (36.4–38.1)39.4 (38.2–40.6)
 16–1736.1 (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)
 2nd34.2 (33.1–35.3)34.0 (32.0–36.2)33.8 (31.7–36.0)35.2 (32.7–37.7)
 3rd30.7 (28.7–32.8)27.7 (25.1–30.5)33.8 (31.0–36.7)30.7 (27.4–34.3)
Skin color
 White41.1 (39.2–43.1)39.3 (37.0–41.7)41.9 (39.4–44.5)43.1 (39.5–46.8)
 Black7.1 (6.3–8.0)7.6 (6.4–9.0)6.6 (5.5–7.9)7.2 (6.1–8.5)
 Brown49.2 (47.3–51.1)50.7 (48.5–52.8)49.0 (46.3–51.6)46.8 (43.6–50.1)
 Yellow/indigenous2.5 (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, kcal2312 (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
 No14.8 (14.0–15.7)19.9 (18.4–21.5)12.4 (11.0–14.0)9.5 (7.7–11.7)
 Yes85.2 (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
 No36.2 (34.5–37.9)51.5 (49.7–53.3)28.6 (26.4–31.0)20.3 (18.1–22.7)
 Yes63.8 (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
 No10.2 (9.4–11.2)15.7 (14.3–17.3)7.3 (6.0–8.9)5.0 (3.5–7.0)
 Yes89.8 (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 circumference12.7 (11.6–13.9)11.4 (10.2–12.6)13.4 (11.7–15.3)14.0 (12.0–16.4)
 High triglycerides4.5 (4.0–5.1)4.2 (3.7–4.8)4.4 (3.7–5.2)5.4 (4.1–7.0)
 High blood glucose4.0 (3.5–4.7)4.2 (3.3–5.3)4.4 (3.5–5.5)3.0 (2.4–3.8)
 High blood pressure8.3 (7.7–9.0)7.6 (6.7–8.6)8.4 (7.5–9.3)9.4 (7.5–11.7)
 Low HDL – c32.5 (30.0–35.1)32.5 (29.9–35.3)32.0 (29.0–35.1)33.6 (29.9–37.4)
  1. CI confidence interval, HDL High density lipoprotein, MetS metabolic syndrome
  2. a Non-weighted values
  3. bThe components of MetS were classified according sex and age-specific recommendations of the International Diabetes Federation