Spearman correlations for insulin sensitivity, n = 44.
| Variable | Spearman ρ (R) | p |
|---|---|---|
| Age, yrs | −0.16 | 0.29 |
| BMI, kg/m2 | −0.45 | 0.002 |
| Waist circumference, cm | −0.47 | 0.001 |
| Sex (male = 0, female = 1) | 0.20 | 0.20 |
| Physical activity, kCal/day | −0.08 | 0.66 |
| Physical activity, METS h/day | 0.19 | 0.27 |
| Disease duration | 0.16 | 0.32 |
| HAQ Disability Index | −0.21 | 0.17 |
| DAS28 | −0.12 | 0.44 |
| Biologic use, yes = 1, no = 0 | 0.14 | 0.37 |
| DMARD use, yes = 1, no = 0 | −0.16 | 0.29 |
| Prednisone use, yes = 1, no = 0 | −0.28 | 0.07 |
| hsCRP, mg/l | −0.18 | 0.25 |
| IL-1β, pg/ml | 0.04 | 0.82 |
| IL-6, pg/ml | −0.30 | 0.05 |
| IL-8, pg/ml | −0.09 | 0.56 |
| TNF-α, pg/ml | −0.08 | 0.62 |
| IL-18 (pg/ml) | −0.20 | 0.20 |
| NEFA | −0.28 | 0.06 |
| Abdominal total adipose area, cm2 | −0.43 | 0.005 |
| Abdominal subcutaneous adiposity, cm2 | −0.30 | 0.06 |
| Abdominal visceral adiposity, cm2 | −0.48 | 0.002 |
| Abdominal liver density, Hu | 0.27 | 0.10 |
| Thigh total area, cm2 | −0.38 | 0.01 |
| Thigh total adipose area, cm2 | −0.20 | 0.20 |
| Thigh subcutaneous adiposity, cm2 | −0.15 | 0.32 |
| Thigh intermuscular adiposity, cm2 | −0.52 | 0.0004 |
| Thigh muscle area, cm2 | −0.36 | 0.02 |
| Thigh muscle density, Hu | 0.12 | 0.45 |
Data given in bold face are statistically significant. BMI: body mass index; HAQ: Health Assessment Questionnaire; DAS28: 28-joint Disease Activity Score; DMARD: nonbiologic disease-modifying antirheumatic drug; hsCRP: high-sensitivity C-reactive protein; METS: metabolic equivalence units; IL: interleukin; TNF: tumor necrosis factor; NEFA: nonesterified free fatty acids.