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Table 1 Characteristics of the study groups

From: Increased prevalence of vulnerable atherosclerotic plaques and low levels of natural IgM antibodies against phosphorylcholine in patients with systemic lupus erythematosus

  Cases Controls P-level
Number 114 122  
Age. year 47.94 ± 13.17 49.11 ± 12.68 0.45
Male gender, % (no.) 12.28% (n = 14) 10.65% (n = 13) 0.94
Current smokers,% (no.) 14.03% (n = 16) 15.57% (n = 19) 0.47
Presence of diabetes,% (no) 5.26% (n = 6) 2.45% (n = 3) 0.22
Presence of hypertension, % (no.) 57.89% (n = 66) 26.22% (n = 32) <0.001
LDL>3 mmol/L,% (no.) 27.19% (n = 31) 44.26% (n = 54) 0.006
Current statins,% (no.) 10.52% (n = 12) 4.09% (n = 5) 0.048
Total cholesterol, mmol/L 4.7 ± 1.1 4.8 ± 1.0 0.23
LDL, mmol/L 2.5 ± 0.88 2.8 ± 0.80 0.026
HDL, mmol/L 1.6 (1.3 to 1.8) 1.6 (1.3 to 1.9) 0.31
Triglycerides, mmol/L 0.99 (0.7 to 1.4) 0.78 (0.55 to 1.10) 0.003
CRP, mg/L 4.44 (0.8 to 4.8) 2.04(0.5 to 2.5) <0.001
Apolipoprotein E 42.69 ± 14.7 38.84 ± 12.05 0.033
ApoB/ApoA1 0.55 (0.50 to 0.70) 0.60 (0.50 to 0.70) 0.39
BMI (kg/m2) 24.89 (20.96 to 27.85) 24.67 (22.41 to 27.82) 0.58
HOMA IR 1.34 (0.80 to 1.96) 1.05 (0.69 to 1.48) 0.011
IgM antiPC. U/ml 61.28 (36.44 to 176.06) 93.74 (52.90 to 134.22) 0.025
IgG antiPC. U/ml 9.36 (5.45 to 14.76) 7.45 (4.62 to 11.66) 0.0083
IgM antiPC < = 10th percentile (%) 16.5% 2.8% < = 0.0005
IgM antiPC < = 25th percentile (%) 32.1% 17.9 0.016
IgM antiPC < = 33th percentile (%) 42.0% 22.6% 0.0022
  1. anti-PC, antibodies against PC; CR, C-reactive protein; HDL, high density lipoprotein; HOMA, homeostasis model assessment of insulin resistance; LDL, low density lipoprotein; PC, phosphorylcholine.