Table 2. Median (range) of body mass in kilograms for each age interval.

Age groups	Male (n = 3013)	Female (n = 2795)	p-value
6–9	29.0 (23.8–50.0)	30.5 (21.3–50.4)	0.191
10–11	35.4 (23.8–81.9)	35.9 (23.3–83.4)	0.915
12–13	49.5 (27.9–125.9)	49.0 (26.9–105.7)	0.063
14–15	63.8 (40.0–155.2)	56.7 (32.9–142.2)	<0.001
16–17	73.1 (46.3–144.9)	59.5 (40.5–155.1)	<0.001
18–20	76.6 (53.3–161.8)	62.3 (44.0–157.7)	<0.001
21–24	83.9 (54.3–165.9)	62.5 (44.5–102.9)	<0.001
25–27	84.5 (54.8–150.4)	62.6 (47.0–173.6)	<0.001
28–30	85.6 (54.2–170.3)	61.7 (44.9–147.3)	<0.001