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Table 2 Laboratory parameters classified according to the presence of chronic musculoskeletal (MS) pain

From: Factors associated with chronic musculoskeletal pain in patients with chronic kidney disease

  All patients n = 456 No chronic MS pain n = 213 Chronic MS pain n = 243 p
Serum parameters     
BUN (mg/dL) 8.4 ± 3.4 8.6 ± 3.6 8.3 ± 3.1 0.019
Scr (mg/dL) 1.5 ± 1.1 1.4 ± 1.1 1. 6 ± 1.1 0.119
eGFR (mL/min/1.73 m2) 65 ± 34 68 ± 36 63 ± 31 0.107
CKD stage     0.074
  1 (n, %) 129 (28.3%) 77 (36.2%) 52 (21.4%)  
  2 (n, %) 110 (24.1%) 44 (20.7%) 66 (27.2%)  
  3 (n, %) 113 (24.8%) 49 (23.0%) 64 (26.3%)  
  4 (n, %) 81 (17.8%) 32 (15.0%) 49 (20.2%)  
  5 (n, %) 23 (5.0%) 11 (5.2%) 12 (4.9%)  
Haemoglobin (g/dL) 11.8 ± 2.1 11.4 ± 2.1 12.4 ± 2.1 0.010*
Albumin (g/dL) 3.9 ± 0.5 3.9 ± 0.6 3.9 ± 0.5 0.882
Ca (mg/dL) 9.2 ± 0.7 9.3 ± 0.5 9.2 ± 0.8 0.631
P (mg/dL) 3.9 ± 0.8 3.8 ± 0.7 4.0 ± 0.9 0.222
Ca × P (mg2/mL2) 32.3 ± 13.4 30.7 ± 13.5 34.1 ± 13.3 0.039*
iPTH (g/mL) 62.1 ± 55.1 62.2 ± 54.5 62.0 ± 56.0 0.964
Cholesterol (mg/dL) 193.6 ± 38.7 196.1 ± 45.8 189.3 ± 23.2 0.586
Triglycerol (mg/dL) 116.2 ± 65.6 120.3 ± 84.0 111.2 ± 35.0 0.699
Uric acid (mg/dL) 5.4 ± 2.1 5.5 ± 2.1 5.3 ± 2.1 0.294
hsCRP (mg/L) 4.6 ± 11.8 4.25 ± 13.3 4.96 ± 9.4 0.535
  1. Notes: Values expressed as mean ± SD or percent.
  2. Abbreviations: MS: musculoskeletal, BUN: blood urea nitrogen, eGFR: estimated glomerular filtration rate, Ca: calcium, P: phosphate, Ca × P: product of calcium and phosphate, iPTH: intact parathyroid hormone, hs-CRP: high-sensitivity C reactive protein.
  3. *p < 0.05 (p values are based on Student t test for analysis of continuous variables).
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