Table 2.
Prevalence of thinness (BMI < 17 kg/m2 at age 18 years) by year of data collection, gender, country† and age; Health Behaviour in School-aged Children (HBSC) Study
| Boys | Girls | |||||||
|---|---|---|---|---|---|---|---|---|
| Country or region | 11 years | 13 years | 15 years | 11 years | 13 years | 15 years | ||
| Austria | 1998‡ | 4 · 3 | 1· 6 | 1·4 | 1998 | 3·9 | 4·1 | 2·7 |
| 2002 | 4·8 | 2·2 | 3·0 | 2002 | 4·6 | 3·7 | 2·9 | |
| 2006‡ | 3 · 6 | 2· 0 | 1· 4 | 2006 | 4·7 | 2·9 | 2·5 | |
| Belgium-Flemish | 1998 | 4·4 | 5·5 | 3·8 | 1998‡ | 8 · 3 | 7· 2 | 4· 5 |
| 2002‡ | 6 · 9 | 4· 4 | 3· 7 | 2002‡ | 8 · 8 | 5· 4 | 2· 9 | |
| 2006 | 4·4 | 4·6 | 2·3 | 2006 | 6·0 | 4·5 | 3·4 | |
| Czech Republic | 1998 | 1·6 | 2·4§ | 0·7 | 1998‡ | 5·0 | 4 · 0 § | 2 · 3 |
| 2002‡ | 3 · 3 | 1 · 2 | 1 · 4 | 2002‡ | 5 · 0 | 3 · 0 | 1 · 6 | |
| 2006 | 1·1 | 0·4 | 0·4 | 2006 | 2·4 | 1 · 8 | 1·2 | |
| Denmark | 1998 | 2·9 | 2·7 | 2·2 | 1998‡ | 6 · 2 | 6· 0 | 2· 5 |
| 2002‡ | 2 · 5 | 1· 6 | 0· 5 | 2002 | 3·5 | 3·3 | 2·2 | |
| 2006 | 2·7 | 2·4 | 1·6 | 2006 | 4·3 | 4·6 | 2·6 | |
| Finland | 1998 | 1·0 | 0·5 | 0·8 | 1998 | 2·5 | 2·4 | 0·9 |
| 2002 | 0·9 | 1·0 | 0·6 | 2002 | 3·2 | 1·8 | 2·2 | |
| 2006 | 0·7 | 0·5 | 0·5 | 2006‡ | 3 · 0 | 2· 2 | 1· 3 | |
| France | 1998 | 2·1 | 2·6 | 2·1 | 1998 | 5·0 | 2·3§ | 3·4 |
| 2002 | 3·1 | 3·1 | 3·0 | 2002 | 4·4 | 4·9 | 2·9 | |
| 2006‡ | 3 · 6 | 2· 5 | 1· 0 | 2006 | 5·7 | 5·3 | 3·6 | |
| Germany | 1998‡ | 5 · 0 | 3· 1 | 1· 6 | 1998‡ | 8 · 5 | 6· 3 | 2· 6 |
| 2002 | 2·7 | 3·0 | 1·3 | 2002‡ | 7 · 1 | 4· 7 | 2· 5 | |
| 2006‡ | 4 · 8 | 3· 2 | 1· 4 | 2006‡ | 7 · 3 | 4· 2 | 1· 8 | |
| Greece | 1998 | 2·0 | 1·3 | 0·5 | 1998 | 3·8 | 1·6 | 2·8 |
| 2002 | 2·3 | 2·5 | 0·6 | 2002 | 4·0 | 3·7 | 2·6 | |
| 2006‡ | 2 · 9 | 1· 9 | 0· 8 | 2006 | 2·9 | 2·8 | 2·0 | |
| Portugal | 1998 | 1·6 | 3·0 | 1·6 | 1998 | 3·4 | 3·5 | 1·7 |
| 2002 | 3·7 | 3·1 | 0·8 | 2002 | 3·3 | 1·3 | 1·3 | |
| 2006 | 2·3 | 1·9 | 1·6 | 2006 | 2·9 | 1·8 | 1·4 | |
| Sweden | 1998‡ | 2·5 | 0·8 | 0·2 | 1998 | 2·8 | 2·7 | 3·2 |
| 2002 | 1·6 | 1·7 | 1·2 | 2002 | 4·0 | 2·5 | 2·5 | |
| 2006 | 1·3 | 2·0 | 1·3 | 2006‡ | 3·0 | 3·3 | 2·6 | |
| USA | 1998‡ | 4 · 1 | 1· 9 | 0· 9 | 1998‡ | 7 · 0 | 4· 0 | 2· 6 |
| 2002‡ | 3 · 5 | 2· 2 | 0· 6 | 2002 | 6 · 6 | 3· 0 | 2· 4 | |
| 2006 | 1·6 | 1·1 | 1·2 | 2006‡ | 4 · 9 | 2· 0 | 0· 8 | |
| Ten European countries combined | 1998‡ | 2 · 8 | 2· 3 | 1· 5 | 1998‡ | 5 · 1 | 4· 1 | 2· 6 |
| 2002‡ | 3 · 2 | 2· 4 | 1· 8 | 2002‡ | 5 · 0 | 3· 7 | 2· 4 | |
| 2006‡ | 2 · 8 | 2· 3 | 1· 2 | 2006‡ | 4 · 4 | 3· 5 | 2· 2 | |
†
Only countries or regions included in the trend analysis.
‡
Significant linear trend in prevalence across age groups by survey (test for trend, P < 0·01; underlined data).
§
Significant linear trend in prevalence across survey years by age (test for trend, P < 0·01; data in bold).