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

Table 3a Effect of pubertal stage interaction on association of cardiometabolic risk score α by BMI

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

ZBMI : body mass index z score
B: un-standardized regression coefficient
SE: standard error
p: p-value testing the significance of the regression coefficient
R²: variance explained by the regression model
p (△F): p-value testing the significance of F change from the preceding model (^# model 1 includes only the intercept term)
ref: reference group of the categorical variable that analyzed by creating dummy variables
*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)

ISSN: 1471-2431