Table 1.
Basic information of participants.
| Category | ALL (n = 6,104) |
Boys (n = 3,044) |
Girls (n = 3,060) |
p value Boys vs. Girls |
|---|---|---|---|---|
| Age [years] | 5.50 ± 0.02 | 5.50 ± 0.03 | 5.50 ± 0.03 | 0.95*1 |
| BMI [kg/m2] | 15.18 ± 0.03 | 15.27 ± 0.05 | 15.09 ± 0.05 | p < 0.01*1 |
| POW [%] | −2.73 ± 0.22 | −2.74 ± 0.35 | −2.61 ± 0.37 | 0.65*2 |
| JB [people] | 2,188 | 1,139 | 1,049 | p < 0.05*3 |
| J-W B [people] | 1,389 | 664 | 725 | 0.08*3 |
| WB [people] | 2,300 | 1,123 | 1,177 | 0.21*3 |
| CB [people] | 172 | 85 | 87 | 0.91*3 |
| SB [people] | 55 | 33 | 22 | 0.13*3 |
Data are expressed as mean ± SE. *1Student’s t-test was used. *2Man-Whitney U test was used. *3Chi-square test was used.