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Table 2 Baseline Characteristics of All Patients from 2006 and 2013

From: Increases in intravenous magnesium use among hospitalized patients: an institution cross-sectional experience

Variable 2006 (N = 397) 2013 (N = 372) P Value
Age 61 ± 17 63 ± 15 0.153
Male Sex n (%) 228 (57) 211 (57) 0.884
Location    <0.001
Cardiology 126 (32) 122 (33)
Coronary Care Unit 38 (10) 35 (9)
Medical/Surgical Ward 29 (7) 62 (17)
General Surgery 136 (34) 75 (20)
Internal Medicine 68 (17) 78 (21)
Medical Co-morbidities    
Diabetes Mellitus 112 (28) 114 (31) 0.477
Hypertension 221 (56) 214 (58) 0.611
Atrial Fibrillation 41 (10) 69 (19) 0.001
Congestive Heart Failure 63 (16) 53 (14) 0.547
Ischemic Heart Disease 134 (34) 102 (27) 0.061
Chronic Obstructive Lung Disease 55 (14) 61 (16) 0.364
Malignancy 69 (17) 69 (19) 0.707
Liver Disease 19 (5) 24 (6) 0.348
Chronic Kidney Disease 100 (25) 92 (25) 0.934
(GFR < 60 ml/min/1.73 m2)
Alcohol Abuse 8 (2) 14 (4) 0.194
Gastrointestinal Symptoms 83 (21) 102 (27) 0.043
Surgery 96 (24) 87 (23) 0.865
Medications    
Calcineurin Inhibitor 9 (2) 13 (3) 0.388
Diuretics 125 (31) 121 (33) 0.758
Proton Pump Inhibitors 100 (25) 130 (35) 0.004
Oral Magnesium 9 (2) 11 (3) 0.652
Laboratory mean (SD)    
Calcium (Total) (n = 171/210) 2.17 (2.04-2.30) 2.10 (2.01-2.12) 0.002
Potassium (n = 396/369) 4.1 (3.8-4.5) 4.2 (3.8-4.5) 0.968
Hemoglobin (n = 396/371) 127 (111–143) 127 (108–140) 0.163
Albumin (n = 149/158) 30 (26–34) 30 (24–34) 0.649
MDRD GFR (396/266) 63 (42–81) 69 (45–88) 0.023
Magnesium (N = 173/233) 0.84 (0.75-0.92) 0.78 (0.71-0.86) <0.001
Admission Magnesium Low (n = 173/233) 39 (23) 76 (33) 0.030