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Table 1 Demographic and physical characteristics of study subjects a

From: Sleep duration of underserved minority children in a cross-sectional study

Variables All children Hispanics Black
N 483 333 150
Age, y 10.3 ± 0.99b 10.3 ± 0.99 10.4 ± 0.99
Gender (M/F) 247/236 175/158 72/78
Weight, kg 47.6 ± 16.5 48.5 ± 15.2 45.7 ± 19.0
Height, cm 141.9 ± 9.2 141.0 ± 9.1 144.0 ± 9.2*
BMI, kg/m2 23.3 ± 6.1 24.0 ± 5.4 21.6 ± 7.1**
BMI z-score 1.32 ± 1.03 1.54 ± 0.87 0.82 ± 1.18**
Weight status, N (%)    
  Normal 164 (34.0) 77 (23.1) 87 (58)**
  Overweight 84 (17.4) 66 (19.8) 18 (12.0)**
  Obese 235 (48.7) 190 (57.1) 45 (30.0)**
Low SES (%)c 93.2 95.5 88.4*
  1. a Hispanic and black groups were compared using independent-samples t-test for continuous variables and Pearson Chi-Square for categorical variables. Significant differences between Hispanic and black are indicated as follows: * for P < 0.01 and ** for P < 0.001.
  2. b Mean ± SD.
  3. c SES = socio economic status. Based on qualification for free/reduced cost meals at school and Medicaid.