Table 2 Characteristics of the material
Characteristic | Total | Symptomatic DIP OA | P a | |
|---|---|---|---|---|
No | Yes | |||
Number (percentage) | 535 (100) | 487 (91.0) | 48 (9.0) | |
Occupation | 0.068 | |||
Dentists, n (percentage) | 290 (54.2) | 270 (55.4) | 20 (41.7) | |
Teachers, n (percentage) | 245 (45.8) | 217 (44.6) | 28 (58.3) | |
Age, years (mean ± SD) | 53.9 ± 5.3 | 53.6 ± 5.2 | 57.7 ± 4.2 | 0.0001 |
BMI (mean ± SD) | 24.5 ± 3.6 | 24.4 ± 3.6 | 25.0 ± 3.3 | 0.24 |
Smoking history | 0.12 | |||
Never, n (percentage) | 396 (74.0) | 356 (73.1) | 40 (83.3) | |
Some time, n (percentage) | 139 (26.0) | 131 (26.9) | 8 (16.7) | |