Hypomagnesemic group (n: 26) Normomagnesemic group (n=42) P value
Age (year) 36.3 ± 9.3 39.2 ± 10.9 0.268
Gender (male/female) 19/7 32/10 0.495
Source of allograft (living/deceased) 15/11 29/13 0.244
Body mass index (kg/m2) 27.0 ± 4.8 25.0 ± 3.4 0.070
Follow-up duration after transplantation (mo) 9.5 (1-132)  46.5 (1-252) 0.001
Use of ACEI or ARB 9 (34.6%) 12 (28.6%) 0.397
Use of vitamin D 9 (34.6%) 11 (26.2%) 0.318
Systolic blood pressure (mmHg) 134 ± 18 125 ± 15 0.026
Diastolic blood pressure (mmHg) 93 ± 13 85 ± 14 0.018
Presence of post-transplant diabetes mellitus 3 (11.5%) 5 (11.9%) 0.641
Presence of post-transplant hypertension 21 (80.8%) 35 (83.3) 0.516
History of acute allograft rejection - 10 (23.8%) 0.005
Serum magnesium (mEq/L) 1.21 ± 0.12 1.68 ± 0.48 0.001
Serum sodium (mEq/L) 137.5 ± 2.9 137.4 ± 4.0 0.861
Serum potassium (mEq/L) 4.1 ± 0.4 4.2 ± 0.4 0.418
Serum calcium (mg/dL) 9.7 ± 0.5 8.4 ± 0.5 0.029
Serum phosphorus (mg/dL) 3.0 ± 1.0 3.3 ± 0.8 0.271
Serum uric acid (mg/dL) 6.5 ± 1.5 6.8 ± 1.5 0.321
Alkaline phosphatase (IU/L) 84 (40-169) 81.5 (36-535) 0.700
Serum glucose (mg/dL) 107.3 ± 19.1 95.8 ± 16.1 0.010
Serum albumin (g/dL) 4.1 ± 0.4 3.9 ± 0.5 0.194
Hemoglobin (g/dL) 14.0 ± 1.8 13.5 ± 1.9 0.260
Intact parathormon (pg/mL) 65 (13-532) 83 (5-834) 0.253
Fractional excretion of sodium (%) 1.3 (0.5-3.0) 1.5 (0.5-5.5) 0.303
Fractional excretion of magnesium (%) 6.5 ± 2.5 7.1 ± 4.4 0.492
Creatinine clearance (mL/min) 79.3 ± 30.0 58.3 ± 24.2 0.002
Amount of proteinuria (mg/d) 55 (0-1130) 125 (0-1880) 0.322
Amount of 24-h urine volume (mL) 3416 ± 1078 3450 ± 1207 0.908
ACEI: Angiotensin Converting Enzyme Inhibitor; ARB: Angiotensin II Receptor Blocker
Table 2: Comparison of demographic, clinical, and laboratory parameters between hypomagnesemic patients and normomagnesemic patients.