Table 4. Average levels of renal markers among seropositive RA subjects and seronegative controls.
| Renal Markers (Unit) | Female | Male | ||||
|---|---|---|---|---|---|---|
| Seropositive RA | Control | p value | Seropositive RA | Control | p value | |
| Mean ± SD | Mean ± SD | Mean ± SD | Mean ± SD | |||
| eGFR | 86.9±21 | 94.2±20.3 | <0.000001 | 80.5±17.8 | 84.7±17.6 | <0.000001 |
| BUN/creatinine | 20.3±6.5 | 19.5±6.1 | <0.000001 | 17.5±5.9 | 17.3±5.2 | 0.163 |
| BUN (mg/dL) | 14.8±5.1 | 13.8±4.7 | <0.000001 | 17.2±5.7 | 16.5±5.5 | <0.00001 |
| Creatinine (Mg/Dl) | 0.8±0.6 | 0.7±0.2 | <0.001 | 1.0±0.2 | 1.0±0.2 | 0.042 |
| Cystatin C (mg/L) | 0.9±0.3 | 0.9±0.2 | <0.000001 | 1.0±0.3 | 0.9±0.2 | <0.000001 |
| Albumin (G/Dl) | 4.5±0.3 | 4.6±0.3 | <0.000001 | 4.6±0.3 | 4.7±0.3 | <0.000001 |
| Sodium (Mmol/L) | 141.5±3 | 141.7±2.9 | 0.002 | 141.8±2.9 | 142.1±2.8 | 0.006 |
| Potassium (Mmol/L) | 4.4±0.4 | 4.4±0.4 | 0.461 | 4.5±0.4 | 4.5±0.4 | 0.053 |
| Chloride (Mmol/L) | 101.2±3 | 101.6±2.9 | <0.000001 | 100.9±3.1 | 101.2±2.8 | 0.002 |
| Total Bicarbonate (Mmol/L) | 22.5±3 | 22.3±2.9 | 0.004 | 22.6±3.1 | 22.7±3.1 | 0.313 |
| Calcium (Mg/Dl) | 9.6±0.5 | 9.6±0.4 | 0.002 | 9.6±0.5 | 9.7±0.4 | 0.034 |
| Phosphate (Mg/Dl) | 3.7±0.5 | 3.7±0.5 | 0.002 | 3.4±0.6 | 3.5±0.6 | <0.000001 |
| Magnesium (Mg/Dl) | 2.1±0.2 | 2.1±0.2 | 0.060 | 2.1±0.2 | 2.1±0.2 | 0.308 |