Table 1.
Proportion of patients with maximal mouth opening recorded in the CARRA database
| Total in Sample (n = 7473) | MMO Ever Recorded | p value | MRI with Contrast Ever Recorded | p value | |
|---|---|---|---|---|---|
| Sex | |||||
| Female | 5290 (70.8%) | 3533 (66.8%) | 0.64 | 297 (5.6%) | < 0.001 |
| JIA Subtype | 0.005 | < 0.001 | |||
| ERA* | 771 (10.3%) | 528 (68.5%) | 43 (5.6%) | ||
| Oligoarthritis | 2712 (34.3%) | 1831 (67.5%) | 134 (4.5%) | ||
| Poly (RF neg) * | 2227 (29.8%) | 1491 (67.0%) | 132 (5.9%) | ||
| Poly (RF pos)* | 469 (6.2%) | 287 (61.2%) | 15 (3.2%) | ||
| Psoriatic* | 613 (8.2%) | 430 (70.1%) | 35 (5.7%) | ||
| Systemic* | 518 (6.9%) | 325 (62.7%) | 6 (1.2%) | ||
| Undifferentiated* | 156 (2.1%) | 109 (69.9%) | 7 (4.5%) | ||
| Race and Ethnicity** | |||||
| Asian | 304 | 190 (62.5%) | 11 (3.6%) | ||
| Black | 387 | 265 (68.5%) | 23 (5.9%) | ||
| Hispanic | 769 | 477 (62.0%) | 24 (3.1%) | ||
| Middle Eastern | 54 | 28 (51.9%) | 2 (3.7%) | ||
| Native American | 131 | 87 (66.4%) | 4 (3.1%) | ||
| Native Hawaiian | 43 | 31 (72.1%) | 1 (2.3%) | ||
| No answer | 166 | 118 (71.1%) | 6 (3.6%) | ||
| Other | 101 | 70 (69.3%) | 5 (4.9%) | ||
| White | 6036 | 4082 (67.6%) | 310 (5.1%) | ||
| Age | 0.765 | < 0.001 | |||
| 0 to 5 | 3317 (44.4%) | 2205 (66.5%) | 110 (3.3%) | ||
| 6–12 | 2745 (36.7%) | 1882 (68.6%) | 150 (5.5%) | ||
| 12+ | 1407 (18.8%) | 916 (65.1%) | 112 (8.0%) | ||
| Diagnosis of TMJ arthritis | |||||
| Yes | 833 (11.4%) | 702 (84.2%) | < 0.001 | 234 (28.1%) | < 0.001 |
Abbreviations ERA: Enthesitis-related arthritis; Poly: Polyarticular; Psoriatic: Psoriatic arthritis; Systemic: Systemic arthritis; Undifferentiated: Undifferentiated arthritis
**Patients who selected multiple races or ethnicities were included in each category that they selected for a total of 7991 selections