TABLE 4.

Relationship between self-reported history of endodontic therapy (ET) and prevalence of coronary heart disease, according to different reference categories.^*

REFERENCE	HISTORY OF ET (ODDS RATIO [95 PERCENT Cl†])
	Group 0: 0 ET	Group 1: 1 ET	Group 2: ≥ 2 ET
0 ET and ≥ 25 teeth
≤ 24 teeth	1.55(1.05–2.30)‡	1.04(0.62–1.73)	1.74(1.12–2.69)‡
≥ 25 teeth	Reference	1.37 (0.83–2.26)	1.62 (1.04–2.53)‡
0 ET and ≤ 24 teeth
≤ 24 teeth	Reference	0.67 (0.41–1.09)	1.12 (0.74–1.70)
≥ 25 teeth	0.64(0.43–0.95)‡	0.88 (0.54–1.46)	1.04(0.66–1.64)

^*From final multivariable logistic regression model.

^†CI: Confidence interval.

^‡P < .05.