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Table 1 Demographic characteristics and serum parameters of study cohort

From: Association between hypomagnesemia and severity of primary hyperparathyroidism: a retrospective study

  Males Females
  normal magnesium group(n = 69) hypomagnesemia group(n = 33) P normal magnesium group(n = 161) hypomagnesemia group(n = 44) P
Age (years) 49.2 ± 16.3 45.6 ± 15.8 0.304 54.9 ± 13.8 52.3 ± 12.0 0.262
BMI (kg/m2) 23.0 ± 2.8 20.8 ± 2.9 0.001 22.5 ± 3.5 22.3 ± 4.0 0.772
Hemoglobin (g/L) 134 ± 22 115 ± 23 <0.001 118 ± 18 107 ± 17 <0.001
eGFR (mL/min/1.73 m2) 76.2 ± 37.7 65.1 ± 38.5 0.238 80.3 ± 41.0 69.2 ± 34.0 0.141
Creatinine (umol/L) 99.2 ± 60.8 138.0 ± 112.7 0.032 78.6 ± 75.7 91.0 ± 51.7 0.315
Albumin (g/L) 38.6 ± 3.3 37.5 ± 6.5 0.301 39.3 ± 9.4 36.0 ± 6.2 0.026
Serum calcium (mmol/L) 2.81 ± 0.34 3.08 ± 0.46 0.005 2.73 ± 0.37 3.10 ± 0.59 <0.001
Corrected calcium (mmol/L) 3.06 ± 0.45 3.40 ± 0.59 0.004 2.96 ± 0.47 3.50 ± 0.66 <0.001
Serum phosphorus (mmol/L) 0.71 ± 0.20 0.74 ± 0.32 0.823 0.80 ± 0.28 0.80 ± 0.31 0.944
Serum magnesium (mmol/L) 0.94 ± 0.12 0.62 ± 0.12 <0.001 0.93 ± 0.12 0.62 ± 0.12 <0.001
24-h urinary calcium (mmol/day) 7.21 ± 4.26 9.55 ± 8.75 0.250 5.79 ± 3.19 7.51 ± 5.52 0.027
24-h urinary phosphorus (mmol/day) 15.7 ± 5.9 14.3 ± 7.0 0.394 13.0 ± 6.5 10.0 ± 4.6 0.018
24-h urinary magnesium (mmol/day) 2.91 ± 0.94 4.19 ± 3.67 0.046 2.54 ± 1.75 2.87 ± 3.16 0.444
PTH (pg/mL) 46.2 ± 50.1 157.2 ± 116.9 <0.001 50.2 ± 63.5 99.6 ± 90.3 <0.001
25(OH) D (ng/mL) 34.4 ± 18.2 36.6 ± 16.8 0.659 32.4 ± 16.5 34.6 ± 19.2 0.516
Lumbar BMD(g/cm2) 0.82 ± 0.16 0.77 ± 0.15 0.172 0.72 ± 0.15 0.69 ± 0.13 0.304
Hip BMD(g/cm2) 0.73 ± 0.16 0.64 ± 0.17 0.054 0.65 ± 0.17 0.62 ± 0.15 0.430
FN BMD(g/cm2) 0.60 ± 0.14 0.52 ± 0.14 0.024 0.53 ± 0.14 0.51 ± 0.12 0.428
  1. BMI body mass index, eGFR estimate glomerular filtration rate, PTH parathyroid hormone, 25 (OH) D, 25-hydroxyvitamin D, BMD bone mineral density, FN femoral neck