Table 1.
Participant characteristics
| 9-year-olds | 13-year-olds | |||
|---|---|---|---|---|
| Girls, mean (SD) | Boys, mean (SD) | Girls, mean (SD) | Boys, mean (SD) | |
| Age (years) | 8.9 (0.3)a | 8.9 (0.3)e | 12.9 (0.3)i | 12.9 (0.3)m |
| Height (cm) | 137 (7)b | 137 (6)f | 161 (7)j | 161 (9)n |
| Weight (kg) | 32 (6)c | 32 (6)g | 50 (9)k | 49 (10)o |
| BMI (kg/m2) | 17.1 (2.7)d | 17.1 (2.5)h | 19.1 (2.8)l | 18.9 (2.8)p |
Due to missing values, the number of participants vary between cells:
a
n=365,
b
n=334,
c
n=346,
d
n=333,
e
n=368,
f
n=331,
g
n=344,
h
n=327,
i
n=467,
j
n=439,
k
n=444,
l
n=426,
m
n=437,
n
n=409,
o
n=413,
p
n=398.