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Table 1 Demographics of patients with MM

From: Association of serum calcium levels with renal impairment and all-cause death in Chinese patients with newly diagnosed multiple myeloma: a cross-sectional, longitudinal study

  MM patients without RI MM patients with RI P-value
N 393 172  
Age(year) 62.5 ± 10.2 64.4 ± 9.9 0.053
Sex    0.99
 Female 153 (38.93%) 67 (38.95%)  
 Male 240 (61.07%) 105 (61.05%)  
Hemoglobin(g/l) 96.62 ± 25.28 79.21 ± 20.74 0.001
Serum globulin(g/l) 53.51 ± 25.36 41.36 ± 25.41 0.001
Serum albumin(g/l) 35.1 ± 7.9 35.92 ± 7.87 0.051
Serum creatinine level(umol/L) 80.91 ± 26.21 421.62 ± 298.00 0.001
Serum calcium(mmol/l) 2.27 ± 0.25 2.46 ± 0.48 0.001
Albumin-adjusted serum calcium (mmol/l) 2.39 ± 0.28 2.57 ± 0.48 0.001
Serum kappa light chain(mg/dl) 2546.57 ± 3326.10 1586.37 ± 2428.69 0.148
Serum lambda light chain(mg/dl) 1440.24 ± 2192.25 1260.52 ± 2512.80 0.148
Urinary kappa light chain(mg/dl) 107.22 ± 285.70 357.53 ± 845.66 0.001
Urinary lambda light chain(mg/dl) 330.82 ± 1150.39 313.98 ± 691.86 0.001
Serum beta 2 microglobulin(ug/l) 4963.87 ± 4176.80 16,212.05 ± 8395.89 0.001
Lactate dehydrogenase(u/l) 192.63 ± 125.68 234.43 ± 157.08 0.001