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Table 4 Lin’s concordance coefficients1(95%CI), Pearson correlation coefficient and bias correction factor(BCF) between self-reported and objective measurements

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

8th-grade

Girls

Boys

 

LCC1(95%CI)

p-value3

Pearson

BCF

LCC1(95%CI)

p-value3

Pearson

BCF

Height

African American

0.70 (0.69,0.70)

<0.001

0.76

0.92

0.86 (0.86,0.86)

<0.001

0.90

0.96

Hispanic

0.60 (0.59,0.60)

<0.001

0.66

0.91

0.64 (0.63,0.64)

<0.001

0.69

0.92

White/Other2

0.82 (0.82,0.82)

<0.001

0.84

0.98

0.85 (0.84,0.85)

<0.001

0.86

0.98

All

0.73 (0.72,0.73)

<0.001

0.76

0.96

0.77 (0.77,0.77)

<0.001

0.80

0.96

Weight

African American

0.82 (0.81,0.82)

<0.001

0.83

0.99

0.95 (0.95,0.95)

<0.001

0.95

1.00

Hispanic

0.90 (0.89,0.90)

<0.001

0.91

0.99

0.92 (0.92,0.92)

<0.001

0.93

0.99

White/Other2

0.92 (0.92,0.92)

<0.001

0.93

0.99

0.94 (0.93,0.94)

<0.001

0.94

1.00

All

0.90 (0.89,0.90)

<0.001

0.90

0.99

0.93 (0.93,0.93)

<0.001

0.94

0.99

BMI

African American

0.78 (0.78,0.79)

<0.001

0.80

0.98

0.90 (0.90,0.90)

<0.001

0.91

0.99

Hispanic

0.81 (0.81,0.81)

<0.001

0.82

0.99

0.83 (0.83,0.83)

<0.001

0.84

0.99

White/Other2

0.86 (0.86,0.87)

<0.001

0.88

0.98

0.86 (0.86,0.86)

<0.001

0.86

1.00

All

0.83 (0.83,0.83)

<0.001

0.84

0.99

0.85 (0.85,0.85)

<0.001

0.86

1.00

11th Grade

Girls

Boys

 

LCC1(95%CI)

p-value3

Pearson

BCF

LCC1((95%CI)

p-value3

Pearson

BCF

Height

African American

0.82 (0.82,0.82)

<0.001

0.85

0.97

0.90 (0.90,0.91)

<0.001

0.95

0.95

Hispanic

0.61 (0.61,0.62)

<0.001

0.66

0.92

0.71 (0.71,0.71)

<0.001

0.76

0.94

White/Other2

0.89 (0.89,0.89)

<0.001

0.90

0.98

0.89 (0.89,0.89)

<0.001

0.92

0.96

All

0.80 (0.80,0.81)

<0.001

0.83

0.97

0.84 (0.84,0.84)

<0.001

0.87

0.96

Weight

African American

0.92 (0.91,0.92)

<0.001

0.92

1.00

0.96 (0.96,0.96)

<0.001

0.97

0.99

Hispanic

0.96 (0.96,0.96)

<0.001

0.96

1.00

0.95 (0.95,0.95)

<0.001

0.95

1.00

White/Other2

0.96 (0.96,0.96)

<0.001

0.96

1.00

0.94 (0.94,0.94)

<0.001

0.94

1.00

All

0.95 (0.95,0.95)

<0.001

0.95

1.00

0.95 (0.95,0.95)

<0.001

0.95

1.00

BMI

African American

0.86 (0.86,0.86)

<0.001

0.87

0.99

0.93 (0.93,0.93)

<0.001

0.95

0.98

Hispanic

0.88 (0.88,0.88)

<0.001

0.88

0.99

0.84 (0.84,0.85)

<0.001

0.85

1.00

White/Other2

0.92 (0.92,0.92)

<0.001

0.93

0.99

0.91 (0.91,0.91)

<0.001

0.92

0.99

All

0.89 (0.89,0.89)

<0.001

0.90

0.99

0.89 (0.89,0.89)

<0.001

0.90

0.99

  1. [1] Lin’s concordance coefficient=LCC
  2. [2] White/other category includes non-Hispanic White, Asian, Pacific Islander, Native American, and “other”
  3. [3] p-values associated with testing the null hypothesis that the Lin’s concordance coefficient is equal to zero.
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International Journal of Behavioral Nutrition and Physical Activity

ISSN: 1479-5868

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