Table 2.
Univariate associations between mortality and other covariates
| HR | 95% CI | p value | |
|---|---|---|---|
| Age (per 1 year) | 1.088 | 1.057–1.120 | <0.001 |
| Gender (male vs. female) | 1.076 | 0.759–1.525 | 0.682 |
| Hemodialysis duration (per 1 month) | 1.003 | 0.995–1.010 | 0.494 |
| BMI | 0.859 | 0.761–0.971 | 0.015 |
| Diabetes (diabetes vs. non-diabetes) | 3.543 | 1.743–7.202 | <0.001 |
| Albumin (per 1 g/L) | 0.939 | 0.884–0.997 | 0.040 |
| Corrected calcium (per 1 mmol/L) | 1.375 | 0.358–5.289 | 0.643 |
| ALP | 1.001 | 1.000–1.002 | 0.029 |
| Mg group (to lower Mg group) | 3.532 | 1.593–7.831 | 0.002 |
| Hemoglobin | 0.990 | 0.971–1.010 | 0.311 |
| White blood cell | 0.952 | 0.795–1.142 | 0.599 |
| Platelet | 0.994 | 0.987–1.000 | 0.054 |
| iPTH, pg/mL | 1.000 | 1.000–1.001 | 0.896 |
| Urea | 0.955 | 0.909–1.003 | 0.068 |
| Creatinine | 0.998 | 0.997–0.999 | 0.001 |
| Uric acid, µmol/L | 0.996 | 0.994–0.999 | 0.014 |
| Mg (per 1 mmol/L) | 0.017 | 0.002–0.197 | 0.001 |
| Phosphate, mmol/L | 0.728 | 0.413–1.284 | 0.273 |
| Potassium, mmol/L | 0.555 | 0.344–0.896 | 0.016 |
| Sodium, mmol/L | 0.919 | 0.817–1.033 | 0.155 |
| Chloride, mmol/L | 0.964 | 0.885–1.049 | 0.395 |
| spKt/V | 0.140 | 0.046–0.427 | 0.001 |
| Vascular access | 5.191 | 0.124–217.7 | 0.388 |
HR, hazard ratio; BMI, body mass index; ALP, alkaline phosphatase; Mg, magnesium; iPTH, intermittent parathyroid hormone.