Correlation Between TPSM GFR and GFRs Calculated with the Other Methods
| Group | n | β-trace protein | β2 microglobulin | Cystatin C | Creatinine |
| Total | 89 | −0.090 (0.417) | −0.762 (<0.0001) | −0.797 (<0.0001) | −0.033 (0.769) |
| 1 | 9 | −0.200 (0.606) | −0.683 (0.042) | ||
| 2 | 33 | 0.671* (0.000) | 0.821* (0.000) | ||
| 3 | 38 | 0.201 (0.227) | 0.764* (0.000) |
↵* Statistically significant.
Data are r values followed by P values in parentheses.