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Table 4 Agreement data for percent fat derived using TGV prediction equations

From: Validity of new child-specific thoracic gas volume prediction equations for air-displacement plethysmography

 

Regression

Residual Plot

 

R2

SEE

r

P

Mean difference(95%CI)

European American

Girls

     

%FAT(adult)

0.97

1.52

0.07

0.65

2.5 (5.6;0.6)

%FAT (child-specific)

0.98

1.36

0.25

0.11

0.3 (3.3;-2.6)

Boys

     

%FAT (adult)

0.97

1.84

0.19

0.44

1.4 (5.2;-2.5)

%FAT (child-specific)

0.98

1.60

0.27

0.27

0.1 (3.6;-3.3)

African American

Girls

     

%FAT (adult)

0.98

1.20

-0.01

0.78

2.8 (5.2;0.5)

%FAT (child-specific)

0.98

1.11

0.19

0.38

0.8 (3.1;-1.5)

Boys

     

%FAT (adult)

0.99

1.16

-0.19

0.42

1.0 (3.3;-1.2)

%FAT (child-specific)

0.99

1.13

-0.20

0.41

-0.1 (2.1;-2.4)

European

Girls

     

%FAT (adult)

0.96

1.09

-0.00

0.97

1.7 (5.3;-2.0)

%FAT (child-specific)

0.95

1.24

0.28

0.11

0.1 (2.5;-2.4)

Boys

     

%FAT (adult)

0.95

1.86

0.22

0.12

-0.7 (3.0;-4.35)

%FAT (child-specific)

0.98

1.16

0.04

0.77

-0.8 (2.4;-4.1)

  1. %FAT; percent body fat by air-displacement plethysmography.
  2. %FAT(adult); Percent body fat derived using thoracic gas volume predicted from adult-based proprietary equations (developed using Crapo et al. prediction of functional residual capacity and tidal volume constants for males and females) [18].
  3. %FAT (child-specific); Percent body fat derived using thoracic gas volume predicted from child-specific equations by Fields et al. [16].
  4. Dependent variable is percent body fat derived using measured thoracic gas volume.
  5. r; The Pearson correlation coefficient between the regression residuals and the criterion; criterion is percent body fat from measured thoracic gas volume).
  6. P value indicates if the r value is significant and hence, the presence of bias.
  7. SEE; Standard error of the estimate.
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BMC Pediatrics

ISSN: 1471-2431

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