Anti-Jo-1 status by smoking and HLA-DRB1*03 status
| Smoking status | DRB1*03 status | Anti-Jo-1 positive, n (%) | Anti-Jo-1 negative, n (%) | OR, 95% CI | p Value |
|---|---|---|---|---|---|
| Negative | Negative | 18 (8) | 196 (92) | 1.0 | |
| Negative | Positive | 39 (31) | 88 (69) | 4.83, 2.62 to 8.90 | <0.0001 |
| Positive | Negative | 11 (11) | 92 (89) | 1.30, 0.59 to 2.87 | 0.51 |
| Positive | Positive | 47 (42) | 66 (58) | 7.75, 4.21 to 14.28 | <0.0001 |
HLA-DRB1*03-positive cases assigned if they possess one or two copies of DRB1*03.