The use of an interdental brush mitigates periodontal health inequalities: the Korean National Health and nutrition examination survey (KNHANES)

Table 2 Multivariable association between interdental brush use and periodontitis

	Odds ratio (95% confidence interval)
	Model 1	Model 2	Model 3
Use of an interdental brush	N = 13,625	N = 13,621	N = 12,427
Nonusers	0.928 (0.814–1.058)	0.911 (0.797–1.042)	0.918 (0.797–1.057)
Users	Reference	Reference	Reference

Response variable: Periodontitis
Explanatory variable: Use of an interdental brush
Model 1 was adjusted to socioeconomic status variables (sex, age, level of education, individual income)
Model 2 was additionally adjusted to personal health practice variables (smoking, toothbrushing, dental flossing, dental clinic visiting)
Model 3 was additionally adjusted to systematic medical factor variables (diabetes mellitus, hypercholesterolemia, hypertension, obesity)

ISSN: 1472-6831