Characteristics of study participants at baseline, 5-year and 15-year follow-up visits
| Baseline | 5-year follow-up | 15-year follow-up | |
| N | 1342 | 1026 | 518 |
| Age, at visit mean (SD) | 66.7 (7.0) | 70.4 (6.7) | 79.9 (5.8) |
| BMI (kg/m2), mean (SD) | 26.6 (5.1) | 26.7 (5.3) | 27.2 (5.2) |
| BMI N (%) | |||
| Underweight/normal (≤24.9) | 590 (44.0) | 435 (42.4) | 187 (36.1) |
| Overweight (≥25.0–29.9) | 466 (34.7) | 378 (36.9) | 208 (40.2) |
| Obese (≥30.0) | 286 (21.3) | 212 (20.7) | 123 (23.8) |
| Missing | 1 | ||
| Race N (%) | |||
| American Indian/Alaska Native | 6 (0.5) | 5 (0.5) | 4 (0.8) |
| Asian/Pacific Islander | 4 (0.3) | 3 (0.3) | 3 (0.6) |
| Black or African American | 22 (1.6) | 12 (1.2) | 6 (1.2) |
| Hispanic/Latino | 4 (0.3) | 1 (0.1) | 2 (0.4) |
| White | 1306 (97.3) | 1005 (98.0) | 503 (97.1) |
| Marital status, married N (%) | |||
| Never married | 80 (6.0) | 58 (5.7) | 30 (5.8) |
| Divorced/separated | 120 (8.9) | 91 (8.9) | 46 (8.9) |
| Widowed | 218 (16.2) | 146 (14.2) | 52 (10.0) |
| Presently married | 913 (68.0) | 720 (70.2) | 385 (74.3) |
| Marriage like relationship | 11 (0.8) | 11 (1.1) | 5 (1.0) |
| Education N (%) | |||
| High school | 280 (21.2) | 213 (21.2) | 94 (18.5) |
| College | 589 (44.6) | 438 (43.5) | 213 (41.9) |
| Post college | 452 (34.2) | 356 (35.4) | 201 (39.6) |
| Missing | 21 | 19 | 10 |
| Cigarette smoking N (%) | |||
| Never | 707 (52.7) | 555 (54.2) | 281 (55.9) |
| Former | 590 (44.0) | 450 (44.0) | 220 (43.7) |
| Currently | 44 (3.3) | 19 (1.9) | 1 (0.2) |
| Missing | 1 | 2 | 16 |
| Alcohol consumption (ounces/day) mean (SD) | 0.45 (0.7) | 0.51 (0.9) | 0.53 (0.8) |
| Periodontal disease (CDC/AAP) N (%) | |||
| None | 306 (23.1) | 333 (33.2) | 123 (25.7) |
| Mild | 48 (3.6) | 45 (4.5) | 14 (2.9) |
| Moderate | 759 (57.3) | 504 (50.2) | 299 (62.6) |
| Severe | 211 (15.9) | 122 (12.1) | 42 (8.8) |
| Missing | 18 | 22 | 40 |
AAP, American Academy of Periodontology; BMI, body mass index; CDC, Centers for Disease Control and Prevention.