Table 2:
Associations of factors with isolated RA-associated bronchiectasis
| Characteristic | Multivariable* OR for isolated RA-BR (95%CI) |
p-value |
|---|---|---|
| Demographics | ||
| Male | 1.00 (Ref) | |
| Female | 0.60 (0.26-1.37) | 0.22 |
| White | 1.00 (Ref) | |
| Non-White | 0.87 (0.35-2.15) | 0.76 |
| Lifestyle | ||
| Never smoker | 1.00 (Ref) | |
| Past smoker | 1.04 (0.50-2.14) | 0.93 |
| Current smoker | 0.45 (0.09-2.35) | 0.34 |
| Smoking pack-years (per unit) | 0.99 (0.98-1.01) | 0.56 |
| BMI at RA diagnosis (per kg/m2) | 0.94 (0.89-0.99) | 0.02 |
| RA factors | ||
| Age at RA diagnosis (per 10 years) | 1.37 (1.02-1.82) | 0.04 |
| RA duration at index date (per year) | 1.03 (1.00-1.07) | 0.08 |
| Seronegative RA | 1.00 (Ref) | |
| Seropositive RA | 3.96 (1.84-8.53) | 0.0004 |
*
Mutually adjusted for all covariates listed.
BMI = body mass index; RA = rheumatoid arthritis; RA-BR = rheumatoid arthritis-associated bronchiectasis