| feature | Observation group (n = 90) | Control group (n = 80) | x2 | P值 |
| D-dimer |
|
| 23.593 | 0.000 |
| Positive | 67 (74.4) | 30 (37.5) |
|
|
| Negative | 23 (25.6) | 50 (62.5) |
|
|
| RLR |
|
| 16.631 | 0.000 |
| Positive | 26 (28.9) | 4 (5.0) |
|
|
| Negative | 64 (71.1) | 76 (95.0) |
|
|
| RLR joint D-dimer |
|
| 17.205 | 0.000 |
| Positive | 20 (22.2) | 1 (1.2) |
|
|
| Negative | 70 (77.8) | 79 (98.8) |
|
|