Native American n=268 | African-American n=1074 | European American n=1567 | Hispanic n=239 | |
Raynaud’s syndrome, n (%) | 92 (34) | 288 (27) P=0.0186 | 559 (36) P=0.7298 | 67 (28) P=0.1503 |
ILD, n (%) | 4 (1) | 1 (<1) P=0.0066 | 4 (<1) P=0.0192 | 1 (<1) P=0.3766 |
Sicca, n (%) | 26 (10) | 77 (7) P=0.1604 | 223 (14) P=0.0530 | 19 (8) P=0.5338 |
Sjӧgren’s syndrome, n (%) | 40 (15) | 84 (8) P=0.0006 | 337 (22) P=0.0140 | 35 (15) P>0.9999 |
Systemic sclerosis, n (%) | 7 (3) | 8 (1) P=0.0173 | 3 (<1) P=0.0001 | 10 (4) P=0.3373 |
Myalgias, n (%) | 119 (44) | 557 (52) P=0.0341 | 772 (49) P=0.1461 | 134 (56) P=0.0099 |
Number and percentage of patients with the comorbidity, and P values are shown. Differences in comorbidities were analysed using Fisher’s exact test. Bold P values are significant compared with the Native American group.
ILD, interstitial lung disease.