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Table 3b Effect of pubertal stage interaction on association of cardiometabolic risk score β by BMI

From: Associations of pubertal stage and body mass index with cardiometabolic risk in Hong Kong Chinese children: A cross-sectional study

Cardiometabolic Risk Score β *

Boys (n = 828)

Girls (n = 1157)

 

B

SE

P

R2 (95 % CI)

p (F)

B

SE

p

R2 (95 % CI)

p (F)

Model 1

   

14.7 % (10.2 % – 19.2 %)

<0.001#

   

6.6 % (3.8 % – 9.4 %)

<0.001#

ZBMI

1.020

0.086

<0.001

  

0.619

0.069

<0.001

  

Model 2

   

15.5 % (10.9 % – 20.1 %)

0.019

   

7.9 % (4.9 % – 10.9 %)

<0.001

ZBMI

1.076

0.089

<0.001

  

0.797

0.082

<0.001

  

Pubertal stage:

          

Pre-pubertal (ref)

          

Pubertal

−0.415

0.226

0.067

  

−0.229

0.224

0.306

  

Late/Post-pubertal

−0.647

0.230

0.005

  

−0.804

0.236

0.001

  

Model 3

   

16.3 % (11.7 % – 20.9 %)

0.030

   

8.4 % (5.3 % – 11.5 %)

0.051

ZBMI

0.811

0.158

<0.001

  

1.328

0.239

<0.001

  

Pubertal stage:

          

Pre-pubertal (ref)

          

Pubertal

−0.303

0.230

0.189

  

−0.801

0.324

0.014

  

Late/Post-pubertal

−0.549

0.233

0.019

  

−1.314

0.316

<0.001

  

Interaction terms:

          

ZBMI * Pubertal

0.561

0.216

0.010

  

−0.675

0.283

0.017

  

ZBMI * Late/Post-pubertal

0.192

0.222

0.389

  

−0.565

0.262

0.031

  
  1. ZBMI: Body mass index (BMI) z score
  2. B: un-standardized regression coefficient
  3. SE: standard error
  4. p: p-value testing the significance of the regression coefficient
  5. R2: variance explained by the regression model
  6. p (F): p-value testing the significance of F change from the preceding model (#model 1 includes only the intercept term)
  7. ref: reference group of the categorical variable analyzed by creating dummy variables
  8. * Cardiometabolic risk score β includes all components of risk score α except waist circumference