Table 4 Correlation coefficient (r), Regression coefficient (β) of multiple regression analysis.
ParameterΨ | Correlation coefficient (r) (Significance 2-tailed, p) | Regression coefficient (β) (Significance, p) |
|---|---|---|
Copper (R2 = 0.250) | ||
   Education | -0.126 (0.045) | -0.070 (0.291) |
   Age | 0.149 (0.018) | 0.126 (0.044) |
   BMI | -0.211 (0.001) | -0.181 (0.006) |
   Group |  | -0.471 (0.001) |
Zinc (R2 = 0.076) | ||
   Age | -0.148 (0.019) | -0.119 (0.058) |
   BMI | 0.205 (0.001) | 0.175 (0.008) |
   Group |  | -0.158 (0.003) |
Iron (R2 = 0.366) | ||
   Marital status | -0.132 (0.035) | -0.056 (0.281) |
   Group |  | 0.373 (0.001) |