Table 4 Linear regression analysis to predict serum creatinine from salivary creatinine in CKD patients stages 1 to 5
From: Salivary creatinine as a diagnostic tool for evaluating patients with chronic kidney disease
Stage | p-value | Linear regression equation | R 2 | R2 (%) | R |
|---|---|---|---|---|---|
Stage 1 | 0.465 | Y = 64.9 + (0.23) × (salivary Cr) | 0.008 | 0.80% | 0.894 |
Stage 2 | 0.030 | Y = 89.7 + (0.54) × (salivary Cr) | 0.035 | 3.50% | 0.187 |
Stage 3 | 0.008 | Y = 134 + (0.95) × (salivary Cr) | 0.140 | 14.0% | 0.374 |
Stage 4 | 0.007 | Y = 251 + (0.6) × (salivary Cr) | 0.179 | 17.9% | 0.423 |
Stage 5 | 0.001 | Y = 451 + (1.72) × (salivary Cr) | 0.275 | 27.5% | 0.524 |