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. 2013 Apr 21;10:49. doi: 10.1186/1479-5868-10-49

Table 2.

Weighted descriptive characteristics for children and adolescents by gender, NHANES 2005-20061

  Children (6–11 years)
Adolescents (12–17 years)
Boys (n = 442)
Girls (n = 473)
Boys (n = 646)
Girls (n = 656)
Mean SE Mean SE Mean SE Mean SE
Age (years)
8.62
0.11
8.53
0.08
14.40
0.11
14.52
0.11
Ethnicity (%)
 
 
 
 
 
 
 
 
 Non-hispanic white
57.70
4.94
55.22
4.11
62.95
4.79
60.56
3.30
 Non-hispanic black
14.07
2.89
14.62
2.20
14.91
3.18
15.07
2.68
 Mexican American
14.68
1.72
14.29
1.64
12.23
1.41
11.61
1.58
 Other
13.55
2.92
15.88
3.11
9.91
1.60
12.75
2.46
MVPA minutes/day (FR 3 METs)
191.79
5.76
169.99
3.84
75.05
3.06
47.80
2.22
MVPA minutes/day (FR 4 METs)
94.14
3.11
76.53
2.24
35.37
1.60
18.94
1.11
MVPA minutes/day (EV)
58.28
1.89
44.76
1.68
43.50
1.40
25.21
1.13
% ≥60 min of MVPA (FR 3 METs)
95.03
2.31
98.03
0.87
57.31
3.40
27.39
2.86
% ≥60 min of MVPA (FR 4 METs)
74.75
2.66
61.46
3.67
14.31
1.68
2.89
0.84
% ≥60 min of MVPA (EV)
45.85
2.39
22.01
2.90
22.05
2.34
6.66
1.84
Steps/day (uncensored)
13,088
271
12,313
274
11,489
235
9,449
206
Steps/day (censored)
10,530
242
9,544
246
8,922
221
6,885
184
Activity counts/min 649.47 15.67 589.01 10.85 476.15 11.99 353.18 10.31

1Values and standard errors were estimated after accounting for NHANES complex survey design and sample weights. Sample sizes refer to unweighted values. All values were derived from participants with 1 to 7 valid days of accelerometer data. Of the 2,217, 197 youth had only 1 valid day and 1,643 youth had 4 or more valid days.