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Table 3a Effect of pubertal stage interaction on association of cardiometabolic risk score α 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 α * Boys (n = 828) Girls (n = 1157)
  B SE P R2 (95 % CI) p (F) B SE p R2 (95 % CI) p (F)
Model 1     35.0 % (29.7 % – 40.3 %) <0.001#     22.3 % (18.1 % – 26.6 %) <0.001#
ZBMI 1.894 0.091 <0.001    1.364 0.075 <0.001   
Model 2     37.4 % (32.1 % – 42.7 %) <0.001     26.1 % (21.7 % – 30.5 %) <0.001
ZBMI 2.019 0.092 <0.001    1.722 0.088 <0.001   
Pubertal stage:           
Pre-pubertal (ref)           
Pubertal −0.594 0.235 0.012    −0.460 0.240 0.055   
Late/Post-pubertal −1.302 0.238 <0.001    −1.622 0.253 <0.001   
Model 3     37.9 % (32.7 % – 43.1 %) 0.024     26.8 % (22.4 % – 31.2 %) 0.006
ZBMI 1.747 0.164 <0.001    2.485 0.255 <0.001   
Pubertal stage:           
Pre-pubertal (ref)           
Pubertal −0.477 0.239 0.046    −1.260 0.346 <0.001   
Late/Post-pubertal −1.196 0.241 <0.001    −2.340 0.338 <0.001   
Interaction terms:           
ZBMI * Pubertal 0.593 0.224 0.008    −0.903 0.302 0.003   
ZBMI * Late/Post-pubertal 0.177 0.230 0.443    −0.845 0.280 0.003   
  1. ZBMI : body mass index 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 that analyzed by creating dummy variables
  8. *Cardiometabolic risk score α = Sum of components’ z score: Components of cardiometabolic risk score α include z-score of sex-specific, age-adjusted waist circumference, systolic and diastolic blood pressure (also height-adjusted), fasting plasma glucose, triglyceride and low-density lipoprotein cholesterol (LDL-C), and minus z-score of sex-specific age-adjusted high-density lipoprotein cholesterol (HDL-C)