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Table 1 Characteristics of participants by sex

From: Principal component analysis reveals gender-specific predictors of cardiometabolic risk in 6th graders

  Girls Boys p
  n Mean/Frequency n Mean/Frequency  
Children’s Factors      
Age (yrs) 1486 11.5 ± 0.5 1390 11.6 ± 0.6 <.0001
BMI (kg/m2) 1486 21.4 ± 4.8 1390 21.2 ± 4.6 ns
Waist circumference (cm) 1478 70.9 ± 12.0 1378 73.9 ± 12.9 <.0001
SBP (mmHg) 1486 106.3 ± 10.4 1390 106.9 ± 10.7 ns
DBP (mmHg) 1486 68.9 ± 9.0 1390 68.8 ± 9.0 ns
HDL (mg/dl) 1486 51.1 ± 14.3 1390 51.7 ± 15.4 ns
Triglycerides (mg/dl) 1486 96.4 ± 57.8 1390 85.6 ± 48.2 <.0001
Glucose (mg/dl) 1486 93.2 ± 9.7 1390 94.8 ± 9.6 <.0001
VO2 (ml/kg/min) 1449 37.4 ± 4.2 1358 44.0 ± 3.7 <.0001
Physically active (%) a 1406 25.3 1321 35.1 <.0001
Parental Factors      
Mother’s age (yrs) 1412 38.5 ± 5.6 1322 39.0 ± 5.5 0.02
Mother’s BMI (kg/m2) 1211 27.0 ± 6.1 1122 26.9 ± 6.3 ns
Mother Physically Active b 1486 33.2 1390 37.0 0.03
Father’s age (yrs) 1339 40.8 ± 6.1 1261 41.1 ± 6.2 ns
Father’s BMI (kg/m2) 1149 28.9 ± 5.4 1058 28.8 ± 5.5 ns
Father Physically Active b 1486 36.3 1390 37.2 ns
Family history% c 1486 29.4 1390 30.2 ns
Mother smoked 1486 28.3 1390 24.6 0.03
Father smoked 1486 27.3 1390 27.2 ns
  1. Abbreviations: SBP systolic blood pressure, DBP diastolic blood pressure, BMI body mass index calculated as body mass (kg) divided by height square (m2).
  2. a % of students who had moderate/vigorous physical activity for ≥1 h for ≥5 days per week.
  3. b % of students whose mother/father is physically active (defined as having ≥30 min of physical activity of moderate intensity ≥5 times/week or vigorous intensity ≥3 times/week).
  4. c % of students whose parents or grandparents had history of early onset cardiovascular diseases (diagnosed before 55 years of age for males and 65 for females).
  5. d % of children whose mother or father smokes.