Table 2. Descriptive characteristics of all participants (n = 5,844).
| ISCOLE site country (city) | World Bank ranking (income) | Parental higher education § (n, (%)) | Participants (n, (% boys)) | Age (years, mean (SD)) | Weight Status*(n, (%) OW/OB) | SED (hr/day) | ST score ¥ | Not meeting ST guidelines (n, (%)) |
|---|---|---|---|---|---|---|---|---|
| Australia (Adelaide) | High | 364 (80.2) | 454 (46.0) | 10.7 (0.4) | 169 (37.2) | 7.9 (1.0) | 2.8 (1.8) | 266 (58.6) |
| Brazil (Sao Caetano do Sul) | Upper-middle | 172 (40.3) | 427 (48.0) | 10.5 (0.5) | 195 (45.7) | 8.3 (1.4) | 3.7 (2.3) | 309 (72.4) |
| Canada (Ottawa) | High | 458 (91.2) | 502 (41.6) | 10.5 (0.4) Ɨ | 154 (30.7) Ɨ | 8.5 (1.0) | 2.4 (1.9) | 227 (45.2) |
| China (Tianjin) | Upper-middle | 240 (49.3) | 487 (52.0) | 9.9 (0.5) | 204 (41.9) Ɨ | 9.4 (1.1) | 1.9 (1.7) | 164 (33.7) |
| Colombia (Bogotá) | Upper-middle | 281 (33.6) | 836 (49.3) | 10.5 (0.6) Ɨ | 192 (23.0) Ɨ | 8.3 (1.1) | 2.9 (1.5) | 552 (66.0) |
| Finland (Helsinki, Espoo, Vantaa) | High | 331 (73.2) | 452 (46.9) | 10.5 (0.4) | 110 (24.3) | 8.8 (1.2) | 2.7 (1.7) | 257 (56.9) |
| India (Bangalore) | Lower-middle | 448 (83.0) | 540 (45.6) | 10.4 (0.5) | 173 (32.0) | 8.6 (1.1) | 1.8 (1.3) | 169 (31.3) |
| Kenya (Nairobi) | Low | 298 (64.2) | 464 (45.9) | 10.2 (0.7) | 90 (19.4) | 8.2 (1.1) | 2.4 (1.7) | 246 (53.0) |
| Portugal (Porto) | High | 116 (21.1) | 547 (43.0) | 10.4 (0.3) | 250 (45.7) Ɨ | 9.2 (1.0) | 2.3 (1.5) | 265 (48.5) |
| South Africa (Cape Town) | Upper-middle | 91 (29.7) | 306 (40.0) | 10.2 (0.7) | 80 (26.1) | 8.2 (1.1) | 3.1 (2.1) | 191 (62.4) |
| UK (Bath, North East Somerset) | High | 294 (72.2) | 407 (42.8) | 10.9 (0.5) | 111 (27.3) | 8.3 (1.0) | 2.9 (1.7) | 275 (67.6) |
| US (Baton Rouge) | High | 313 (74.2) | 422 (41.0) | 9.9 (0.6) Ɨ | 160 (37.9) | 8.7 (1.0) | 3.1 (2.3) | 247 (58.5) |
| All sites | 3406 (58.3) | 5844 (45.6) | 10.4 (0.6) | 1888 (32.3) Ɨ | 8.6 (1.2) | 2.6 (1.8) | 3158 (54.2) |
§Number (%) of sample who had at least one parent complete more than at least high school education (i.e., at least some college/university).
*Number (%) with WHO BMI z-score classification overweight or obese
ƗSites where boys had significantly higher values than girls (p<0.05).
¥ST score = [(hours of TV on weekdays x 5) + (hours of TV on weekend days x 2) + (hours of video games and computers on weekdays x 5) + (hours of video games and computers on weekend days x 2)]/7
ǂNumber (%) of children not meeting guidelines for ≤2 hours of screen time/day, in all sites, girls were significantly more likely to meet guidelines than boys (p<0.05).
BMI: Body Mass Index; SED: sedentary time; SD: standard deviation; ST: screen time; UK: United Kingdom; US: United States; OW/OB: overweight/obese.