Table 3.
Correlation analysis (Pearson correlation coefficient) of quantitative variables. * p-value ≤ 0.05; *** p-value ≤ 0.001; **** is equivalent to a p-value ≤ 0.0001.
| BP_Cmix (ng/g creat.) | ΣBPmix (nM) | Age | BMI (kg/m2) | Serum Cotinine (mg/dL) | Poverty-Income Ratio | |
|---|---|---|---|---|---|---|
| BP_Cmix (ng/g creat.) | 1 | **** | - | - | * | - |
| ΣBPmix (nM) | 0.824 | 1 | - | * | * | - |
| Age | 0.023 | −0.019 | 1 | - | *** | **** |
| BMI (kg/m2) | 0.012 | 0.041 | 0.016 | 1 | - | **** |
| Serum cotinine (mg/dL) | 0.044 | 0.042 | −0.060 | −0.034 | 1 | **** |
| Poverty/Income Ratio | 0.016 | 0.023 | 0.06 | −0.089 | −0.175 | 1 |
Bold: statistically significant values