Table 1.
Country | Survey year | Total sample | Subsample | Schools | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Girls | Boys | Urban residence | Rural residence | Public school | Private school | Age | |||||
n | n | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | Mean (SD) | N | ||
Japan | 2011 | 1842 | 1828 | 943 (51.6) | 885 (48.4) | 833 (45.5) | 998 (54.5) | 1831 (100) | 0 (0) | 13.9 (0.3) | 17 |
Greece | 2016 | 1581 | 1040 | 556 (53.5) | 484 (46.5) | 750 (72.1) | 290 (27.9) | 1040 (100) | 0 (0) | 13.6 (0.6) | 14 |
Norway | 2017 | 2019 | 1900 | 946 (49.8) | 954 (50.2) | 1611 (84.8) | 289 (15.2) | 1742 (99.4) | 10 (0.6) | 13.9 (0.8) | 45 |
China | 2016 | 2659 | 2119 | 1040 (49.1) | 1079 (50.9) | 819 (36.8) | 1408 (63.2) | 1779 (79.9) | 448 (20.1) | 13.8 (0.8) | 10 |
India | 2016 | 2016 | 1672 | 864 (51.7) | 808 (48.3) | 1420 (84.9) | 252 (15.1) | 209 (12.5) | 1463 (87.5) | 13.6 (0.7) | 11 |
Finland | 2014 | 3422 | 2982 | 1493 (50.1) | 1489 (49.9) | 2686 (89.9) | 301 (10.1) | 2988 (100) | 0 (0) | 14.1 (0.8) | 13 |
Singapore | 2014 | 3319 | 2165 | 1103 (51.0) | 1062 (49.1) | 2165 (100) | 0 (0) | 2165 (100) | 0 (0) | 14.0 (0.8) | 24 |
Vietnam | 2016 | 1118 | 946 | 484 (51.2) | 462 (48.8) | 946 (100) | 0 (0) | 946 (100) | 0 (0) | 13.9 (0.8) | 3 |
Israel | 2014 | 2188 | 1277 | 698 (54.7) | 579 (45.3) | 1101 (100) | 0 (0) | 1246 (97.4) | 33 (2.6) | 14.0 (0.8) | 10 |
Iran | 2016 | 1456 | 1178 | 557 (47.3) | 621 (52.7) | 1178 (100) | 0 (0) | 1036 (88.0) | 142 (12.1) | 14.3 (0.8) | 16 |
Lithuania | 2016 | 3837 | 2507 | 1256 (50.1) | 1251 (49.9) | 1353 (53.8) | 1162 (46.2) | 2515 (100) | 0 (0) | 14.1 (0.8) | 17 |
Russia | 2015 | 1580 | 1051 | 546 (52.0) | 505 (48.1) | 1051 (100) | 0 (0) | 1051 (100) | 0 (0) | 14.1 (0.8) | 20 |
Indonesia | 2016 | 1390 | 1023 | 542 (53.0) | 481 (47.0) | 1024 (100) | 0 (0) | 656 (64.1) | 368 (35.9) | 13.5 (0.6) | 5 |
Total | 2011–2017 | 28,427 | 21,688 | 11,028 (50.9) | 10,660 (49.2) | 16,937 (78.3) | 4700 (21.7) | 19,204 (88.6) | 2464 (11.4) | 13.9 (0.8) | 200 |
Chi-square test for equal proportions was used to analyze sex distribution. Bold type indicates statistical significance of at least p < 0.05. SD standard deviation