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Table 2 Relationship between blood pressure and independent variable

From: The association between cadmium and lead exposure and blood pressure among workers of a smelting industry: a cross-sectional study

Variables β coefficient
(Standardized β coefficient)
95% CI R2 p-value
Systolic blood pressure
 Per doubling of blood cadmiuma 2.310 (0.166) 0.727–3.893 0.028 0.004
 Per doubling of blood leada 0.344 (0.019) - 1.715 – 2.403 0.000 0.742
Diastolic blood pressure
 Per doubling of blood cadmiuma 2.067 (0.187) 0.814–3.319 0.035 0.001
 Per doubling of blood leada - 0.300 (− 0.021) - 1.936 – 1.335 0.000 0.718
  1. p - value was calculated by simple linear regression analysis. alogarithm (base 2) transformation of blood cadmium or lead concentration. Those who were taking antihypertensive drugs were excluded. p < 0.05