Correlation of periodontal inflamed surface area with glycemic status in controlled and uncontrolled type 2 diabetes mellitus

Table 5 Regression analysis

Model 1	Unstandardized coefficients		Standardized coefficients	t	P value
	B	SE	β
Constant	1558.557	1067.486		1.460	0.146
Age, yr	18.249	8.546	0.152	2.135	0.034a
Gender	89.509	141.724	0.055	0.632	0.529
Occupation	13.393	25.231	0.042	0.531	0.596
Socio-economic status	101.568	113.792	0.062	0.893	0.373
Smoking	173.619	145.772	0.094	1.191	0.235
Chew tobacco	171.018	272.268	0.044	0.628	0.531
Duration of diabetes	23.708	8.867	0.211	2.674	0.008a
Total dose of insulin	0.399	1.942	0.016	0.205	0.838
HbA1C	167.690	35.502	0.355	4.723	0.000a

^aP < 0.05. Dependent variable: Periodontal inflamed surface area (PISA). The multivariate linear regression model with dependent variable PISA showed that age, duration of diabetes, and glycated hemoglobin were significantly associated with PISA. B: Unstandardized coefficients; SE: Standard error; β: Standardized coefficients; HbA1c: Glycated hemoglobin A1c.