Table 2

Correlation coefficients (r) of resistin (dependent variable) and disease-related variables (independent variables).

Resistin (ng/mL)

r

r_s

Erythrocyte sedimentation rate, mm/hour

0.316^a

C-reactive protein, mg/L

0.193^c

S-albumin, g/L

-0.302^a

IgG, g/L

0.178^c

S-C3, g/L

-0.216^b

Interleukin-6, pg/mL

0.315^a

sIL-6R, pg/mL

0.183^c

Tumor necrosis factor-alpha, pg/mL

0.312^a

S-high-density lipoprotein, mmol/L

-0.177^c

S-triglycerides, mmol/L

0.252^b

S-creatinine, μmol/L

0.180^c

Glomerular filtration rate, mL/minute

-0.228^b

Nephritis ever (yes = 1 and no = 0)

0.178^c

Corticosteroid current dose, mg/day

0.157^c

BMD lumbar spine, g/cm²

-0.165^c

BMD total hip, g/cm²

-0.170^c

BMD radius total, g/cm²

-0.261^b

Number of vertebral fractures per patient

-0.171^c

S-ICTP, μg/L

0.193^c

All variables were tested with the Kolmogorov-Smirnov normality test. Pearson correlation was used when the variables were normally distributed; otherwise, Spearman correlation was used. Only significant variables are shown. ^ap < 0.001; ^bp < 0.01; ^cp < 0.05. BMD, bone mineral density; ICTP, C-terminal telopeptide of type I collagen; IgG, immunoglobulin G; r, Pearson correlation coefficient; r_s, Spearman correlation coefficient; sIL-6R, soluble interleukin-6 receptor; SLE, systemic lupus erythematosus.

Almehed et al. Arthritis Research & Therapy 2008 10:R15   doi:10.1186/ar2366