Table 3.
Spearman’s correlation of serum tumor necrosis factor-alpha cytokines with all clinical parameter among healthy study participants
| Clinical parameter | Serum TNF-α cytokines | ||
|---|---|---|---|
| Correlation coefficient (ρ) | P | Inference | |
| GI | −0.245 | 0.297 | Weak correlation |
| PI | 0.059 | 0.804 | No linear relationship |
| PPD | 0.672** | 0.001 | Strong correlation |
| CAL | 0.672** | 0.001 | Strong correlation |
TNF-α: Tumor necrosis factor-alpha; GI: Gingival index; PI: Plaque index; PPD: Probing pocket depth; CAL: Clinical attachment loss; Significance P 0.001 (HS)