Table 1. Correlation between pain and each of the magnetic resonance imaging findings (univariate analysis).
| Category | Pain | Total (n=96) | χ2 | P-value | |
|---|---|---|---|---|---|
| Non-painful (n=47) | Painful (n=49) | ||||
| Functional aspect of disc displacement | 14.51 | <0.001 | |||
| Absent | 20 (42.6) | 5 (10.2) | 25 (26.0) | ||
| ADDWR | 17 (36.2) | 21 (42.9) | 38 (39.6) | ||
| ADDWOR | 10 (21.3) | 23 (46.9) | 33 (34.4) | ||
| Degree of disc displacement | 18.02 | <0.001 | |||
| Normal | 20 (42.6) | 5 (10.2) | 25 (26.0) | ||
| Slight to mild | 14 (29.8) | 11 (22.5) | 25 (26.0) | ||
| Moderate to significant | 13 (27.7) | 33 (67.4) | 46 (47.9) | ||
| Joint effusion | 5.97 | 0.01 | |||
| Absent | 44 (93.6) | 37 (75.5) | 81 (84.4) | ||
| Present | 3 (6.4) | 12 (24.5) | 15 (15.6) | ||
| Disc deformities | 9.89 | <0.001 | |||
| Absent | 19 (40.4) | 6 (12.2) | 25 (26.0) | ||
| Present | 28 (59.6) | 43 (87.8) | 71 (74.0) | ||
| Osteoarthrosis | 1.17 | 0.28 | |||
| Absent | 38 (80.9) | 35 (71.4) | 73 (76.0) | ||
| Present | 9 (19.2) | 14 (28.6) | 23 (24.0) | ||
(ADDWR: anterior disc displacement with reduction, ADDWOR: anterior disc displacement without reduction)
Values are presented as number (%).
The sum of the percentages does not equal 100% because of rounding.