Characteristics of 3026 study participants in MOST study, according to presence or absence of incident total knee replacement (TKR); participant counted once for each knee they contribute.
| Characteristic | No TKR, n = 5666 | TKR, n = 202 |
|---|---|---|
| Age, mean yrs (SD) | 62.3 (8.1) | 64.8 (7.5) |
| Sex, % | ||
| Male | 40 | 29.2 |
| Female | 60 | 70.8 |
| Radiographic osteoarthritis, Kellgren-Lawrence grade, % | ||
| 0 | 31.0 | 1.5 |
| 1 | 34.5 | 5.0 |
| 2 | 13.1 | 10.4 |
| 3 | 13.7 | 29.7 |
| 4 | 7.7 | 53.5 |
| WOMAC score, mean (SD) | 3.3 (3.7) | 7.3 (3.8) |
| Occupation, % | ||
| Farming | 6.1 | 4.0 |
| Un/semiskilled | 6.0 | 6.4 |
| Worked at home | 7.7 | 7.4 |
| Other | 80.1 | 82.2 |
| Education, % | ||
| High school or less | 28.5 | 37.6 |
| Some college | 26.6 | 28.2 |
| College graduate or higher | 44.8 | 34.2 |
WOMAC: Western Ontario and McMaster Universities OA pain score.