Clinically Classified Periodontitis and Its Association in Patients with Preexisting Coronary Heart Disease

Table 4

Results of the unstratified and stratified logistic regression analyses for gender, smoking status, educational level, and income level.

Variables		Clinically classified periodontitis
Stratified analyses	OR	95% Confidence Interval (CI)
		Lower	Upper
Gender
In total cohort	1.229	0.756	1.998
Males	4.142	0.335	7.347
Females	1.689	0.964	2.961
Smoking status
In total cohort	2.155	1.292	3.594
Smokers	3.004	1.566	5.760
Non-smokers	—	—	—
Educational level
In total cohort	0.712	0.392	1.293
Low	4.035	2.125	7.664
High	—	—	—
Income level
In total cohort	1.339	0.725	2.473
Low	—	—	—
High	4.599	2.203	9.602