Table 1

Pearson correlation coefficients of white blood cell count with MetS variables by age groups and race, adjusting for age, sex, and smoking (for adults)

Cross-sectional analysis
PreadolescentsAdolescentsAdults
WhitesBlacksWhitesBlacksWhitesBlacks
n7124259026421,082421
Age (years)4–114–1112–1712–1718–3818–38
BMI0.104**0.0170.159***0.115**0.219***0.133**
Waist circumference0.214***0.112*
Systolic BP0.095*0.107*0.082*0.0180.144***0.032
Diastolic BP0.0220.0480.065−0.0170.136***−0.028
Glucose−0.081*−0.085−0.051−0.139***−0.0120.002
Log-insulin0.0720.0420.105**−0.0300.237***0.097
Log-HOMA-IR0.051−0.0180.052−0.0410.192***0.083
HDL cholesterol−0.088*−0.084−0.109**−0.032−0.076*−0.032
Log-triglycerides0.115**0.149**0.179***0.140***0.305***0.122*
Heart rate0.156***0.0820.141***0.152***0.104**0.127**
Uric acid0.0460.0330.096**0.0710.148***0.062
Longitudinal analysis
BaselineFollow-up
WhitesBlacksWhitesBlacks
n538205538205
BMI0.180***0.0390.221***0.086
Waist circumference0.197***0.0050.224***0.028
Systolic BP0.139**0.0550.134**0.190**
Diastolic BP0.134**−0.0160.121**0.241***
HDL cholesterol−0.0750.050−0.129**0.009
Log-triglycerides0.163***0.0920.171***0.071
Heart rate0.111**0.0610.097*0.090
Uric acid0.134**0.0340.119**0.007
  • Different from zero:

  • *P < 0.05;

  • **P < 0.01;

  • ***P < 0.001. Racial difference:

  • P < 0.05;

  • P < 0.01. BP, blood pressure; HOMA-IR, homeostasis model assessment of insulin resistance.