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Table 1 Sample characteristics of children ages 6–11 years old who participated in NHANES Youth Fitness Survey in 2012. N = 686

From: Disparities in physical fitness of 6–11-year-old children: the 2012 NHANES National Youth Fitness Survey

  Total < 130% FIPR 130–349% FIPR ≥ 350% FIPR p
n (%)a n (%)a n (%)a n (%)a
Total 686 (100.0) 258 (33.6) 251 (37.2) 117 (29.1)  
Sex      0.021
 Male 337 (51.3) 114 (47.2) 146 (58.2) 77 (47.2)  
 Female 349 (48.7) 144 (52.8) 105 (41.8) 100 (52.8)  
BMI percentileb      0.031
  < 85th 427 (64.3) 171 (67.4) 135 (55.9) 121 (71.5)  
 85th – 95th 119 (16.5) 39 (15.1) 51 (19.4) 29 (14.4)c  
  ≥ 95th 139 (19.1) 48 (17.4) 64 (24.6) 27 (14.2)c  
  1. Abbreviations: FIPR family income to poverty ratio, P values are obtained using Rao-Scott Chi-Squared test
  2. a Unweighted n (weighted percentage). Note: Weighted percentages were estimated by applying appropriate sampling weights and by using Taylor series linearization to account for complex sampling design
  3. b Frequency based on n = 685 due to missing value in body weight
  4. c Standard errors for percentage may be unstable due to small sample size