Table 1.
Sample description: number of participants in 1997/1998, 2001/2002 and 2005/2006 surveys, by year of data collection, gender, country† and age; Health Behaviour in School-aged Children (HBSC) Study
| Missing‡ | 11 years | 13 years | 15 years | |||||
|---|---|---|---|---|---|---|---|---|
| n | % | Boys (n) | Girls (n) | Boys (n) | Girls (n) | Boys (n) | Girls (n) | |
| Austria | ||||||||
| 1998 | 222 | 5 | 723 | 690 | 744 | 759 | 604 | 759 |
| 2002 | 371 | 9 | 750 | 777 | 771 | 791 | 643 | 634 |
| 2006 | 276 | 6 | 853 | 841 | 794 | 793 | 693 | 801 |
| Belgium-Flemish | ||||||||
| 1998 | 359 | 8 | 828 | 902 | 781 | 754 | 797 | 762 |
| 2002 | 413 | 7 | 1003 | 1150 | 966 | 1140 | 1027 | 1003 |
| 2006 | 347 | 8 | 670 | 621 | 697 | 707 | 831 | 785 |
| Czech Republic | ||||||||
| 1998 | 77 | 2 | 579 | 588 | 637 | 637 | 596 | 609 |
| 2002 | 22 | 1 | 826 | 865 | 780 | 881 | 806 | 854 |
| 2006 | 56 | 1 | 765 | 744 | 804 | 797 | 842 | 823 |
| Denmark | ||||||||
| 1998 | 540 | 11 | 793 | 842 | 855 | 892 | 737 | 783 |
| 2002 | 578 | 13 | 783 | 867 | 772 | 796 | 656 | 713 |
| 2006 | 951 | 17 | 985 | 1108 | 980 | 1057 | 762 | 790 |
| Finland | ||||||||
| 1998 | 216 | 4 | 796 | 858 | 803 | 824 | 764 | 772 |
| 2002 | 143 | 3 | 952 | 937 | 873 | 845 | 867 | 874 |
| 2006 | 249 | 5 | 850 | 933 | 834 | 891 | 790 | 895 |
| France | ||||||||
| 1998 | 327 | 8 | 736 | 731 | 642 | 779 | 592 | 653 |
| 2002 | 561 | 7 | 1332 | 1339 | 1421 | 1479 | 1301 | 1313 |
| 2006 | 533 | 8 | 1265 | 1228 | 1147 | 1279 | 1139 | 1083 |
| Germany | ||||||||
| 1998 | 275 | 6 | 813 | 756 | 821 | 792 | 795 | 796 |
| 2002 | 757 | 13 | 1056 | 1038 | 879 | 921 | 842 | 899 |
| 2006 | 626 | 9 | 1127 | 1104 | 1234 | 1207 | 1271 | 1281 |
| Greece | ||||||||
| 1998 | 110 | 6 | 788 | 800 | 643 | 653 | 605 | 717 |
| 2002 | 223 | 4 | 627 | 625 | 600 | 631 | 643 | 681 |
| 2006 | 133 | 4 | 543 | 544 | 553 | 634 | 650 | 766 |
| Portugal | ||||||||
| 1998 | 386 | 11 | 446 | 557 | 564 | 632 | 534 | 775 |
| 2002 | 266 | 11 | 579 | 586 | 456 | 507 | 378 | 422 |
| 2006 | 352 | 9 | 623 | 578 | 648 | 687 | 613 | 770 |
| Sweden | ||||||||
| 1998 | 393 | 10 | 656 | 621 | 699 | 647 | 607 | 537 |
| 2002 | 389 | 10 | 743 | 744 | 606 | 585 | 609 | 609 |
| 2006 | 422 | 10 | 772 | 741 | 655 | 698 | 752 | 774 |
| USA | ||||||||
| 1998 | 602 | 12 | 709 | 849 | 873 | 930 | 813 | 995 |
| 2002 | 578 | 12 | 674 | 805 | 894 | 1027 | 754 | 871 |
| 2006 | 375 | 11 | 500 | 594 | 708 | 806 | 649 | 635 |
†
Only countries or regions included in the trend analysis.
‡
Percentage of 11–15-year-olds who did not respond to one or more self-reported weight and height items, by country/region and year of data collection.