Table 1.
Basic characteristics of study participants according to history of periodontal disease and number of tooth lossa
| History of periodontal disease |
Number of tooth loss |
|||
|---|---|---|---|---|
| No | Yes | 0 | ≥ 4 | |
| Age, year, mean (SD) | 67 (8) | 70 (9) | 67 (8) | 73 (9) |
| Male, % | 65 | 75 | 65 | 77 |
| White, % | 92 | 91 | 92 | 90 |
| Family history of CRC, % | 22 | 21 | 21 | 22 |
| Diabetes mellitus, % | 8 | 10 | 8 | 14 |
| Smoking, pack-year, mean (SD) | 9.4 (15.8) | 15.5 (19.9) | 9.5 (15.6) | 19.1 (22.5) |
| Body mass index, kg/m2, mean (SD) | 26.1 (4.2) | 26.2 (4.2) | 26.0 (4.1) | 27.0 (4.7) |
| Height, cm, mean (SD) | 173.5 (9.9) | 173.2 (10.1) | 173.5 (10.0) | 173.3 (9.4) |
| Physical activityb, MET-hr/wk, mean (SD) | 27.0 (21.8) | 25.8 (21.3) | 27.2 (22.0) | 23.9 (21.2) |
| Total folate intake, mg/d, mean (SD) | 566 (229) | 559 (230) | 567 (230) | 556 (231) |
| Calcium intake, mg/d, mean (SD) | 1011 (356) | 997 (352) | 1013 (356) | 974 (347) |
| Vitamin D intake, IU/d, mean (SD) | 440 (225) | 436 (225) | 440 (225) | 436 (230) |
| Processed red meat intake, serving/wk, mean (SD) | 1.7 (1.7) | 1.7 (1.8) | 1.7 (1.7) | 2.0 (2.2) |
| Alcohol intake, g/d, mean (SD) | 9.1 (11.3) | 9.7 (11.7) | 9.4 (11.5) | 8.7 (11.3) |
| Regular aspirin usec, % | 51 | 51 | 51 | 52 |
| Physical examination within the past 2 years, % | 74 | 73 | 73 | 74 |
Abbreviation: CRC, colorectal cancer; MET, metabolic equivalent of task; SD, standard deviation.
a
All variables are adjusted for age and sex except for age and sex. Cumulative average values across person-endoscopies are presented. Mean (SD) is presented for continuous variables and percentage for categorical variables.
b
Physical activity was represented by the product sum of the MET of each specific recreational activity and hours spent on that activity per week.
c
Regular aspirin users were defined as those who used at least 2 standard tablets (325 mg) per week.