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Table 2 Weighted descriptive characteristics for children and adolescents by gender, NHANES 2005-2006 1

From: Steps/day translation of the moderate-to-vigorous physical activity guideline for children and adolescents

  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
  1. 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.