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Table 1 Descriptive statistics of SPAN 2000-2002 and 2004-2005 by grade

From: Measuring the bias, precision, accuracy, and validity of self-reported height and weight in assessing overweight and obesity status among adolescents using a surveillance system

Characteristic

2000-2002

2004-2005

All

 

8th (n1=5362)

N1=(288584)

11th (n1=3576)

N1=(249363)

8th (n1=8827)

N1=(291672)

11th (n1=6456)

N1=(233753)

8th (n1=14189)

N1=(580256)

11th (n1=10032)

N1=(483116)

Age, y, mean(SE1)

13.7(0.03)

16.7(0.05)

13.7(0.04)

16.7(0.03)

13.7(0.02)

16.7(0.03)

Boys

54.6(3.05)

55.0(2.93)

50.8(1.26)

50.5(2.31)

52.7(1.60)

52.8(1.90)

Race/Ethnicity (%(SE1))

      

African American

11.2(2.92)

9.2(2.41)

14.7(3.02)

14.2(2.69)

13.0(2.13)

11.6(1.77)

Hispanic

40.9(4.09)

26.9(3.71)

41.7(4.27)

36.9(2.65)

41.3(3.09)

31.7(2.76)

White/Other2

47.9(3.85)

63.9(4.80)

43.6(4.44)

48.8(3.78)

45.7(3.04)

56.6(3.40)

Self-Reported

      

Height (cm) median(SE1)

161.6(0.41)

169.4(0.72)

160.9(0.75)

166.7(0.47)

161.3(0.43)

168.4(0.53)

Weight (Kg) median(SE1)

56.4(0.72)

65.8(0.93)

56.1(0.61)

65.2(0.74)

56.3(0.56)

65.6(0.61)

BMI (Kg/m2) median(SE1)

21.1(0.26)

22.6(0.14)

21.2(0.21)

22.7(0.28)

21.1(0.16)

22.6(0.18)

Weight status (%)3

      

Normal

65.1(2.50)

72.7(3.57)

65.7(2.35)

67.7(1.56)

65.4(1.69)

70.3(2.20)

Overweight

19.5(2.52)

15.1(2.53)

20.0(1.68)

15.7(0.90)

19.7(1.48)

15.4(1.40)

Obese

15.4(1.54)

12.2(1.43)

14.3(1.21)

16.6(1.30)

14.8(0.95)

14.3(1.09)

Objectively-measured

      

Height (cm) median(SE 1)

162.2(0.36)

169.5(0.49)

162.2(0.41)

167.3(0.46)

162.2(0.27)

168.6(0.45)

Weight (Kg) median(SE 1)

57.5(0.49)

66.4(0.78)

56.9(0.45)

65.1(1.08)

57.1(0.38)

66.1(0.71)

BMI (Kg/m2) median(SE 1)

21.4(0.36)

22.9(0.18)

21.6(0.20)

23.2(0.26)

21.5(0.18)

23.1(0.16)

Weight status (%)3

      

Normal

63.5(2.48)

68.8(3.90)

64.5(2.39)

66.4(1.98)

64.0(1.65)

67.6(2.26)

Overweight

17.8(2.17)

16.8(2.66)

18.0(1.38)

16.3(1.60)

17.9(1.26)

16.5(1.55)

Obese

18.7(1.69)

14.5(1.64)

17.5(1.62)

17.3(1.35)

18.1(1.14)

15.8(1.17)

  1. [1] n represents the sample size in the survey and N indicates the estimated population size using the sampling weights. SE: Standard error.
  2. [2] White/other category includes non-Hispanic White, Asian, Pacific Islander, Native American, and “other”
  3. [3] Using the U.S. Centers for Disease Control and Prevention (CDC) sex and age BMI growth charts, students are classified into underweight/normal (<85th percentile), overweight (≥85th percentile to <95th percentile) and obese (≥95th percentile) weight status categories.
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International Journal of Behavioral Nutrition and Physical Activity

ISSN: 1479-5868

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