Table 1 Demographic characteristics and BMI of the study population a
Boys | Girls | |||||
|---|---|---|---|---|---|---|
n | % | n | % | Χ 2 | p | |
Ethnicity | ||||||
Scandinavian ethnicity | 2088 | 83.9 | 2067 | 83.6 | 0.106 | 0.745 |
Non-Scandinavian ethnicity | 401 | 16.1 | 405 | 16.4 | 0.020 | 0.888 |
Parental employment status | ||||||
Both parents working | 1982 | 79.8 | 1934 | 78.0 | 0.588 | 0.443 |
At least one parent unemployed | 501 | 20.2 | 544 | 22.0 | 1.769 | 0.183 |
Housing conditions | ||||||
Living in an apartment | 659 | 26.3 | 672 | 27.1 | 0.127 | 0.722 |
Living in a villa etc. | 1851 | 73.7 | 1809 | 72.9 | 0.482 | 0.488 |
Exercise habits | ||||||
Exercises at least once a week | 1904 | 78.4 | 1872 | 77.4 | 0.271 | 0.603 |
Exercises less than once a week | 524 | 21.6 | 581 | 23.7 | 2.940 | 0.086 |
BMI | ||||||
BMI < 18 | 154 | 6.4 | 287 | 12.4 | 40.111 | <0.001 |
BMI 18–24.99 | 1845 | 77.1 | 1836 | 79.3 | 0.022 | 0.882 |
BMI >25 | 394 | 16.5 | 191 | 8.3 | 70.443 | <0.001 |