Distribution and prevalence of selected characteristics in NHANES-III adults included in the analyses (unweighted n = 2355)
| Characteristic | Overall (%) |
| Sex | |
| Women | 57.3 |
| Men | 42.7 |
| Race–ethnicity | |
| Non-Hispanic White | 89.2 |
| Non-Hispanic Black | 8.3 |
| Mexican–American | 2.5 |
| Active health insurance | |
| Yes | 98.7 |
| No | 1.3 |
| Education | |
| <12 years | 38.5 |
| 12 years | 32.5 |
| >12 years | 28.9 |
| Annual income | |
| ⩽$14 999 | 31.4 |
| $15 000–24 999 | 26.2 |
| >$25 000 | 42.4 |
| Smoking history | |
| Non-smokers | 45.8 |
| Former smokers | 40.3 |
| Active smokers | 13.8 |
| CAD | |
| Yes | 15.4 |
| No | 84.6 |
| CHF | |
| Yes | 6.5 |
| No | 93.5 |
| Prior stroke | |
| Yes | 7.1 |
| No | 92.9 |
| Diabetes | |
| Yes | 11.9 |
| No | 88.1 |
| Hypertension | |
| Yes | 74.5 |
| No | 25.5 |
| Dentate status | |
| Completely edentulous | 29.3 |
| Edentulous in 1 arch | 14.5 |
| Some natural teeth present | 56.2 |
| P gingivalis IgG (EU) | |
| (⩽57) | 7.9 |
| (58–65) | 18.9 |
| (66–119) | 54.1 |
| (>119) | 19.1 |
CAD, coronary artery disease; CHF, congestive heart failure.