Table 1 Clinical and demographic characteristics of the polyarticular juvenile idiopathic arthritis (pJIA) cohort (N = 1684) in the CARRA Registry (April 2015-February 2020) by community poverty level.
Characteristic | Overall (N = 1684) | Community Poverty Level < 20 (N = 1368) | Community Poverty Level ≥ 20 (N = 316) |
|---|---|---|---|
Sex | |||
 Male | 362 (21%) | 292 (21%) | 70 (22%) |
 Female | 1322 (79%) | 1076 (79%) | 246 (78%) |
Age at diagnosis (Median, IQR) | 7 (3-11) | 7 (3-11) | 8 (3-12) |
Race/ethnicity | |||
 White | 1246 (74%) | 1048 (77%) | 198 (63%) |
 Asian | 53 (3%) | 46 (3%) | 7 (2%) |
 Black, African American, African or Afro-Caribbean | 63 (4%) | 39 (3%) | 24 (8%) |
 Hispanic, Latino, or Spanish origin | 167 (10%) | 109 (8%) | 58 (18%) |
 Other | 128 (8%) | 103 (7%) | 27 (9%) |
 Prefer not to answer | 25 (1%) | 23 (2%) | 2 (<1%) |
Self-Reported Income Level | |||
  < $25,000 | 150 (9%) | 99 (7%) | 51 (16%) |
 $25-49,999 | 188 (11%) | 136 (10%) | 52 (17%) |
 $50-99,999 | 414 (24%) | 324 (24%) | 90 (28%) |
  ≥ $100,000 | 483 (29%) | 430 (31%) | 53 (17%) |
 Prefer not to answer or unknown | 449 (27%) | 379 (28%) | 70 (22%) |
Highest Level of Family Education | |||
 High school or less | 260 (15%) | 187 (14%) | 73 (23%) |
 College, junior college, or technical school | 656 (40%) | 546 (40%) | 110 (35%) |
 Graduate school or higher | 289 (17%) | 250 (18%) | 39 (12%) |
 Prefer not to answer or unknown | 479 (28%) | 385 (28%) | 94 (30%) |
Insurance | |||
 Public | 430 (23%) | 294 (22%) | 136 (43%) |
 Private | 1123 (67%) | 970 (71%) | 153 (48%) |
 Other | 131 (10%) | 104 (7%) | 27 (9%) |
RF+ | Â | Â | Â |
 Positive | 309 (18%) | 233 (17%) | 76 (24%) |
 Negative | 1204 (72%) | 997 (73%) | 207 (66%) |
 Not performed or missing | 171 (10%) | 138 (10%) | 33 (10%) |
CCP+ positive | |||
 Positive | 252 (15%) | 187 (14%) | 65 (21%) |
 Negative | 786 (47%) | 649 (47%) | 137 (43%) |
 Not performed or missing | 646 (38%) | 532 (39%) | 114 (36%) |