Table 1.
Demographic Characteristics of All Variables between Healthy Control and TMJOA.a
| Healthy Control (n = 124) | TMJOA (n = 130) | P Valueb | |
|---|---|---|---|
| Age, y | 53.85 ± 8.23 | 56.5 ± 8.49 | 0.101 |
| CT HU | 2,870.93 ± 684.03 | 2,644.478 ± 535.9 | 0.068 |
| Bone volume fraction (BV/TV) | 24.25 ± 6.6 | 20.86 ± 5.95 | 0.006 |
| Poor dental treatment history | 7 (8.24) | 11 (12.5) | 0.774 |
| TMJ dislocation | 3 (3.53) | 5 (5.68) | 0.670 |
| Misaligned teeth | 26 (30.59) | 18 (20.45) | 0.262 |
| Habits related to mastication | 22 (25.88) | 23 (26.14) | 0.633 |
| Hormone replacement therapy | 1 (1.18) | 1 (1.14) | 0.962 |
| Psychological illness | 4 (4.71) | 2 (2.27) | 0.497 |
| Smoking | 10 (11.76) | 9 (10.23) | 0.757 |
| Alcohol | 10 (11.76) | 9 (10.23) | 0.495 |
| Poor socioeconomic status | 4 (4.71) | 3 (4.55) | 0.655 |
| Body mass index | 22.19 ± 3.57 | 21.69 ± 3.6 | 0.509 |
BV/TV, bone volume/total volume; CT HU, computed tomography Hounsfield unit; TMJ, temporomandibular joint; TMJOA, temporomandibular joint osteoarthritis.
a
Values are presented as number (%) or mean ± standard deviation.
b
Estimated in a multilevel logistic regression model with each variable as the sole predictor.