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. Author manuscript; available in PMC: 2010 Aug 1.
Published in final edited form as: J Am Dent Assoc. 2009 Aug;140(8):1004–1012. doi: 10.14219/jada.archive.2009.0311

TABLE 3.

Relationship between self-reported history of endodontic therapy (ET) and prevalence of coronary heart disease (CHD).*

VARIABLE RELATIONSHIP BETWEEN SELF-REPORTED HISTORY OF ET AND CHD
PREVALENCE (ODDS RATIOS [95% CONFIDENCE INTERVAL])

Initial Model Full Model Final Model

Variables (No.) 2 39 20

CHD Status (No.)
Participants with CHD 395 326 339
Participants without CHD 6,256 5,053 5,264

Self-Reported History of ET and No. of Teeth
(Odds Ratio [95% Confidence Interval])
0 ET and ≥ 25 teeth Reference Reference Reference
1 ET and ≥ 25 teeth 1.04(0.68–1.58) 1.35(0.81–2.25) 1.37(0.83–2.26)
2 ET and ≥ 25 teeth 1.40 (0.98–2.02) 1.62 (1.02–2.57) 1.62 (1.04–2.53)
0 ET and ≤ 24 teeth 1.73 (1.28–2.34) 1.52 (1.00–2.29) 1.55 (1.05–2.30)
1 ET and ≤ 24 teeth 1.26 (0.83–1.91) 1.02 (0.60–1.72) 1.04(0.62–1.73)
2 ET and ≤ 24 teeth 1.68 (1.19–2.39) 1.72 (1.09–2.72) 1.74(1.12–2.69)

Age (in Years) 1.05(1.01–1.09) 1.04(1.02–1.07)

Sex (Male Versus Female) 2.88(2.07–3.99) 2.93 (2.16–3.96)

Income (> $35,000 per Year) 0.77 (0.57–1.04)

Education (Some High School, High School 0.82 (0.67–1.02) 0.80 (0.66–0.97)
Diploma, Bachelor’s or Graduate Degree)

Race, by Study Center Versus Jackson, Miss.
Forsyth County, N.C.
African American 2.50 (0.98–6.39) 2.20(0.90–5.38)
White 1.59 (0.86–2.95) 1.37(0.80–2.33)
Suburban Minneapolis 1.47 (0.78–2.79) 1.19(0.69–2.03)
Washington County, Md. 1.30 (0.73–2.33) 1.10(0.68–1.80)

Usual Source of Health Care
Private physician (yes/no) 1.46 (0.97–2.21)
Health maintenance organization (yes/no) 1.04(0.76–1.44)
Regular clinic (yes/no) 1.05 (0.73–1.51)
Hospital emergency department (yes/no) 1.71 (1.24–2.37)
Walk-in clinic (yes/no) 1.40 (0.86–2.28)

Usual Medical Care Payment Mechanism
Health insurance (yes/no) 1.28(0.75–2.17)
Medicare (yes/no) 0.81 (0.52–1.24)
Medicaid (yes/no) 1.45 (0.92–2.30)

Dental Health
Crowns (0 vs. ≥ 1) 1.90 (1.33–2.73) 1.88 (1.33–2.64)
Carious coronal surfaces (0 versus ≥ 1) 0.76 (0.52–1.11) 1.74(0.52–1.06)
Carious root surfaces (0 versus ≥ 1) 0.87 (0.54–1.40)
Filled coronal surfaces (0 versus ≥ 1) 0.85 (0.49–1.46)
Filled root surfaces (0 versus ≥ 1) 1.00(0.75–1.32)
Extent of attachment loss ≥ 4 mm§ (0 versus ≥ 0) 1.12 (0.75–1.66)
Extent of pocket depth ≥ 5 mm (0 versus ≥ 0) 0.94(0.69–1.27)

Factors Associated With Coronary Heart
Disease
Aspirin use (yes/no) 6.74(5.01–9.06) 6.55 (4.92–8.71)
Diabetes (yes/no) 1.14(0.81–1.61)
Hypertension (yes/no) 1.37(1.04–1.80) 1.30 (1.01–1.69)
Use of cholesterol-lowering medications (yes/no) 5.63 (4.28–7.39) 5.17 (4.00–6.69)
Overweight (versus normal weight) 0.77 (0.55–1.07)
Obese (versus normal weight) 0.56 (0.38–0.82)
Pack-year smoking (> 0 to 20 versus 0) 0.92 (0.64–1.32) 0.92 (0.65–1.31)
Pack-year smoking (> 20 versus 0) 1.61 (1.18–2.20) 1.73 (1.29–2.32)
Low level of high-density lipoprotein cholesterol
(≤ 39 versus ≥ 40 mg/dL)
1.55(1.15–2.08) 1.39 (1.07–1.82)
High level of low-density lipoprotein cholesterol
(≥ 130 versus ≤ 129 mg/dL)
1.08 (0.82–1.42)
High triglycerides (≥ 150 versus ≤ 149 mg/dL) 0.82 (0.61–1.09)
*

From multivariable logistic regression models.

P < .05.

Dashes indicate data not applicable.

§

mm: Millimeters.

mg/dL: Milligrams per deciliter.