Table 2.

Correlation between different periodontal clinical parameters and blood urea and serum creatinine level

Parameter	Correlation coefficient (rs)	p value
Mean probing depth (mm)
Blood urea (mg/dl)	0.089	0.182
Serum creatinine (mg/dl)	0.217	0.001*
Plaque %
Blood urea (mg/dl)	0.178	0.001*
Serum creatinine (mg/dl)	0.018	0.786 ns
BOP %
Blood urea (mg/dl)	0.324	< 0.001*
Serum creatinine (mg/dl)	0.045	0.504
Mean CAL (mm)
Blood urea (mg/dl)	0.290	< 0.001*
Serum creatinine (mg/dl)	0.450	< 0.001*

^*Significant (p ≤ 0.05); ns; non-significant (p > 0.05)