Piecewise regression results of the associations between FFMI and cardiometabolic indicators stratified by sex and fat level
| Boys | Girls | |||||||
| Normal fat | High fat | Normal fat | High fat | |||||
| Parameters | β | 95%CI | β | 95% CI | β | 95% CI | β | 95% CI |
| SBP | 3.182 | (3.024 to 3.340) | 2.319 | (1.996 to 2.643) | 3.575 | (3.313 to 3.838) | 2.128 | (1.683 to 2.573) |
| DBP | 0.869 | (0.746 to 0.992) | 0.619 | (0.374 to 0.865) | 1.439 | (1.230 to 1.647) | 1.054 | (0.705 to 1.404) |
| TC | −0.047 | (−0.069 to 0.034) | −0.018 | (−0.040 to 0.005) | −0.058 | (−0.079 to 0.038) | −0.049 | (−0.084 to 0.015) |
| HDL-C | −0.064 | (−0.070 to 0.059) | −0.046 | (−0.054 to 0.037) | −0.063 | (−0.073 to 0.054) | −0.041 | (−0.053 to 0.029) |
| LDL-C | 0.004 | (−0.009 to 0.016) | 0.010 | (−0.013 to 0.034) | −0.011 | (−0.031 to 0.009) | −0.033 | (−0.069 to 0.003) |
| TG | 0.039 | (0.032 to 0.046) | 0.049 | (0.031 to 0.067) | 0.054 | (0.043 to 0.065) | 0.071 | (0.044 to 0.097) |
| FPG | 0.025 | (0.017 to 0.034) | 0.045 | (0.015 to 0.076) | 0.056 | (0.041 to 0.072) | 0.036 | (0.017 to 0.055) |
Adjusted for the age of children. P values were from piecewise regression analysis. Those highlighted in bold indicate statistical significance (bilateral p<0.05).
DBP, diastolic blood pressure; FFMI, fat-free mass index; FPG, fasting blood glucose; HDL-C, high-density lipoprotein cholesterol; LDL-C, low-density lipoprotein cholesterol; SBP, systolic blood pressure; TC, total cholesterol; TG, triglycerides.