| Total | Non-spinal pain | Spinal pain | p-valueb | ||
---|---|---|---|---|---|---|
N | %a | N | %a | |||
TMD total | ||||||
 Control | 12,375 | 8148 | 65.8 | 4227 | 34.2 |  |
 Case | 12,375 | 6411 | 51.8 | 5964 | 48.2 | <.0001 |
TMD grade 1c | ||||||
 Control | 10,951 | 7224 | 66.0 | 3727 | 34.0 |  |
 Case | 10,951 | 5828 | 53.2 | 5123 | 46.8 | <.0001 |
TMD grade 2d | ||||||
 Control | 910 | 589 | 64.7 | 321 | 35.3 |  |
 Case | 910 | 392 | 43.1 | 518 | 56.9 | <.0001 |
TMD grade 3e | ||||||
 Control | 514 | 335 | 65.2 | 179 | 34.8 |  |
 Case | 514 | 191 | 37.2 | 323 | 62.8 | <.0001 |
Difference test between TMD gradesf | Â | Â | Â | <.0001 |