Table 3.

Mean values of body weight ± standard deviations (SD) in children and adolescents in the nationwide anthropometric surveys (NAS) 2011 in Slovakia and their changes since NAS 2001

	Body weight (mean ± SD)
	Boys			Girls			Sex differences
Age (years)	in 2011	changed since 2001		in 2011	changed since 2001		2001	2011
	kg	kg	P	kg	kg	P	P	P
7	27.5 ± 6.4	1.5	<0.001	26.5 ± 6.1	1.2	<0.001	<0.001	<0.001
8	30.5 ± 7.2	1.6	<0.001	30.2 ± 6.9	1.9	<0.001	<0.001	0.040
9	34.4 ± 8.7	1.8	<0.001	34.0 ± 8.2	2.5	<0.001	<0.001	0.002
10	38.9 ± 10.0	3.1	<0.001	38.9 ± 9.6	3.6	<0.001	0.313	0.962
11	43.9 ± 11.0	4.4	<0.001	43.4 ± 10.5	2.4	<0.001	<0.001	0.461
12	49.3 ± 6.1	5.0	<0.001	48.7 ± 10.6	3.2	<0.001	<0.001	0.020
13	54.8 ± 13.0	4.2	<0.001	52.1 ± 10.4	1.8	<0.001	<0.001	<0.001
14	61.0 ± 12.7	4.8	<0.001	55.6 ± 11.0	3.4	<0.001	<0.001	<0.001
15	66.0 ± 12.9	3.9	<0.001	57.4 ± 10.2	1.9	<0.001	<0.001	<0.001
16	69.1 ± 12.6	3.0	<0.001	57.7 ± 10.5	0.8	0.080	<0.001	<0.001
17	72.1 ± 12.9	2.9	<0.001	58.2 ± 9.1	0.8	0.030	<0.001	<0.001
18	74.1 ± 12.2	3.9	<0.001	59.3 ± 10.1	1.8	0.011	<0.001	<0.001