Table 1.
Characteristics of the study patients
| Characteristics | All patients (n=372) |
Hypomagnesemia (n=180) |
Normomagnesemia (n=192) |
P-value |
|---|---|---|---|---|
| Age, year | 72.52±5.43 | 72.96±4.70 | 72.11±6.02 | 0.134 |
| Weight, kg | 73.66±11.62 | 74.11±11.81 | 72.68±11.39 | 0.092 |
| SBP, mmHg | 132.07±18.01 | 132.33±16.85 | 131.82±19.08 | 0.785 |
| DBP, mmHg | 69.50±9.88 | 68.67±7.61 | 70.29±11.57 | 0.114 |
| Hypertension | 145 (39%) | 75 (41.7%) | 69 (35.9%) | 0.215 |
| Hemoglobin, mg/dL | 12.35±1.49 | 12.27±1.49 | 12.43±1.50 | 0.315 |
| CRP, mg/L | 5.10±4.46 | 6.13±4.98 | 4.13±3.66 | <0.001 |
| Albumin, g/dL | 4.10±0.46 | 4.02±0.53 | 4.18±0.38 | 0.001 |
| Smoking | 42 (11.3%) | 24 (13.3%) | 18 (9.4%) | 0.229 |
| ARB or ACE-I usage | 30 (8.1%) | 16 (8.8%) | 14 (7.2%) | 0.572 |
| CCB usage | 31 (8.4%) | 14 (7.7%) | 17 (8.8%) | 0.732 |
| Beta-blocker usage | 37 (9.9%) | 17 (9.4%) | 20 (10.4%) | 0.755 |
| Diuretic usage | 18 (4.8%) | 10 (5.5%) | 8 (4.1%) | 0.543 |
| Alpha-blocker usage | 20 (5.4%) | 11 (6.1%) | 9 (4.6%) | 0.543 |
| eGFR, mL/min/1.73 m2 | 30.46±11.80 | 31.64±12.09 | 29.35±11.44 | 0.061 |
| Urine P/C, mg/dL | 0.76±0.59 | 0.83±0.68 | 0.69±0.48 | 0.023 |
| PTH, pg/mL | 159.38±108.36 | 151.86±95.45 | 166.44±119.02 | 0.195 |
| Magnesium, mg/dL | 1.91±0.41 | 1.52±0.13 | 2.27±0.18 | <0.001 |
| Calcium, mg/dL | 9.37±0.54 | 9.41±0.49 | 9.34±0.58 | 0.196 |
| Phosphorus, mg/dL | 3.79±0.77 | 3.74±0.82 | 3.84±0.72 | 0.231 |
Note: Values expressed as mean ± standard deviation or n (%).
Abbreviations: SBP, systolic blood pressure; DBP, diastolic blood pressure; CRP, C-reactive protein; ARB, angiotensin receptor blocker; ACE-I, angiotensin-converting enzyme inhibitor; eGFR, estimated glomerular filtration rate; PTH, parathyroid hormone; P/C, protein-to-creatinine; CCB, calcium-channel blocker.