Table 2.
Associations between environmental distribution of trace elements by quartiles and incidence of stroke
| Model I | Model II | Model III | ||
|---|---|---|---|---|
| Arsenic | Wald Test p-value* | 0.451 | 0.285 | 0.291 |
| 1 | Ref | Ref | Ref | |
| 2 | 1.14 (0.94,1.38) | 1.14 (0.94,1.38) | 1.12 (0.91,1.37) | |
| 3 | 1.11 (0.92,1.34) | 1.17 (0.96,1.42) | 1.19 (0.98,1.45) | |
| 4 | 1.15 (0.95,1.38) | 1.20 (0.98,1.46) | 1.19 (0.97,1.46) | |
| Mercury | Wald Test p-value* | 0.706 | 0.710 | 0.741 |
| 1 | Ref | Ref | Ref | |
| 2 | 0.98 (0.82,1.18) | 0.99 (0.82,1.19) | 1.03 (0.85,1.25) | |
| 3 | 1.09 (0.91,1.30) | 1.09 (0.91,1.31) | 1.11 (0.92,1.33) | |
| 4 | 1.00 (0.83,1.21) | 1.05 (0.86,1.27) | 1.07 (0.88,1.30) | |
| Magnesium | Wald Test p-value* | 0.698 | 0.279 | 0.216 |
| 1 | Ref | Ref | Ref | |
| 2 | 1.08 (0.89,1.30) | 1.13 (0.93,1.39) | 1.18 (0.96,1.46) | |
| 3 | 1.12 (0.92,1.35) | 1.26 (1.00,1.58) | 1.28 (1.01,1.62) | |
| 4 | 1.04 (0.86,1.26) | 1.19 (0.93,1.54) | 1.22 (0.95,1.58) | |
| Selenium | Wald Test p-value* | 0.016 | 0.010 | 0.019 |
| 1 | Ref | Ref | Ref | |
| 2 | 1.05 (0.86,1.27) | 1.07 (0.87,1.31) | 1.08 (0.87,1.33) | |
| 3 | 1.22 (1.00,1.48) | 1.23 (1.01,1.50) | 1.21 (0.98,1.48) | |
| 4 | 1.31 (1.09,1.58) | 1.35 (1.11,1.64) | 1.34 (1.10,1.64) |
*
Three degree of freedom test
Model I–unadjusted model, Model II–Model I + age, gender, race, region, education, and age-race interaction Model III–Model II + SBP, hypertension, diabetes, smoking status, heart disease, atrial fibrillation, and LVH