Obliterative bronchiolitis associated with rheumatoid arthritis: analysis of a single-center case series

BMC Pulmonary Medicine

Table 4 Univariable Cox regression predictors of all-cause mortality

Characteristics	HR (95% CI)	P-value
Age at diagnosis, years	0.99 (0.94–1.05)	0.78
Gender, female	0.93 (0.15–17.6)	0.94
Duration of RA prior to diagnosis, years	0.98 (0.94–1.03)	0.58
Active joint symptoms at diagnosis	1.87 (0.24–11.42)	0.51
Mosaic attenuation at diagnosis	0.59 (0.12–2.17)	0.44
Lung fibrosis at diagnosis	2.12 (0.58–7.76)	0.24
Bronchiectasis at diagnosis	1.02 (0.28–3.69)	0.97
Baseline PFTs at diagnosis
TLC%	0.99 (0.95–1.04)	0.76
RV/TLC%	1.01 (0.98–1.03)	0.51
FVC%	0.94 (0.87–1.03)	0.19
FEV1%	0.99 (0.91–1.07)	0.96
Positive bronchodilator response	3.41 (0.73–17.7)	0.11
Macrolide therapy	1.73 (0.40–7.44)	0.44

Abbreviations: TLC% percent of predicted total lung capacity, RV/TLC% percent of predicted residual volume over total lung capacity, FVC% percent of predicted forced vital capacity, FEV1% percent of predicted forced expiratory volume in the first second, RA rheumatoid arthritis

ISSN: 1471-2466