Table 3.
Prostate cancer patients’ survival—combined effect of Se and Zn blood levels by quartiles.
| Univariable Cox Regression Models | Multivariable Cox Regression Models | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Quartile No. | Se Level (µg/L) | Zn Level (µg/L) | Alive | Dead | HR | 95% CI | p | HR | 95% CI | p |
| SeQI-ZnQI vs. SeQIV-ZnQIV | ||||||||||
| SeQI-ZnQI | 41.58–71.79 | 515.70–784.83 | 22 | 27 | 24.5 | 3.32–180 | 0.002 | 20.9 | 2.80–156 | 0.003 |
| Others | 52.77–138.27 | 541.75–1339.61 | 197 | 64 | 7.71 | 1.07–55.6 | 0.043 | 6.52 | 0.90–47.2 | 0.063 |
| SeQIV-ZnQIV | 88.78–104.22 | 946.99–1225.28 | 27 | 1 | — | — | — | — | ||
HR—hazard ratio; CI—confidence interval; SeQ—selenium quartile; ZnQ—zinc quartile.