Table 2.

Correlations between serum levels of soluble E-cadherin and disease-related variables in women with systemic lupus erythematosus (SLE).

Correlation	Serum sE-cadherin, ng/ml
Correlation	r	r_s
Age, yrs	0.25^b
Disease duration, yrs		0.24^b
SLICC		0.21^b
Erythrocyte sedimentation rate, mm/h		0.36^a
S-creatinine, μmol/l		0.42^a
Glomerular filtration rate, ml/minute	−0.53^a
GFR 50 (< 50 = 1, ≥ 50 = 0)		0.29^a
Renal involvement ever by SLE (yes = 1, no = 0)		0.18^c
Cholesterol, mmol/l	0.37^a
Low-density lipoprotein, mmol/l	0.19^c
Triglycerides, mmol/l		0.36^a
Interleukin-6, pg/ml		0.31^a
MMP-3, ng/ml		0.31^a

All variables were tested with the Kolmogorov-Smirnov normality test. Pearson correlation was used with the variables were normally distributed, otherwise Spearman correlation was used. Only significant variables are shown.
↵a p < 0.001;
↵b p < 0.01;
↵c p < 0.05. DMARD: disease-modifying antirheumatic drugs; GFR: glomerular filtration rate; r: Pearson correlation coefficient; r_s: Spearman correlation coefficient; SLICC: Systemic Lupus International Collaborative Clinics/ACR Damage Index; MMP: matrix metalloproteinase.