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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.