Table 5.

Studies that evaluated the intersection of bronchiectasis and interstitial lung disease among patients with rheumatoid arthritis (n=7).

Reference	RA duration, years (unless specified)	Patients with prevalence RA-BR (numerator)	Total RA patients studied (denominator)	Prevalence of RA-BR in RA (%)	Comments
Gautam et al.	Not reported	n=2	n=54	3.7%	All patients had RA-ILD
Zhang et al.	Mean 8 (SD 9)	n=76	n=550	13.8%	RA-BR prevalence was higher in RA-ILD (18.1%) compared to RA without ILD (10.5%)
McDonagh et al.	Median 9 (range 1–27)	n=4	n=20	20.0%	RA-BR prevalence was higher in RA-ILD (30.0%) compared to RA without ILD (20.0%)
Gabbay et al.	Mean 13.2 (SD 8.6) months	n=2	n=36	6.0%	2 patients had traction bronchiectasis secondary to ILD
Demir et al.	Mean 5.38 (SD 2.8)	n=9	n=34	26.0%	Of 23 patients with suspected or confirmed RA-ILD, 9 (39%) had RA-BR.
Robles-Perez et al.	Median 12 months	n=8	n=40	20.0%	RA-ILD was found in 2 of the cases of RA-BR
Matsumoto et al.	Mean 17.1 (SD 10.2)	n=32	n=332	9.6%	RA-BR prevalence was higher in RA without ILD (9.6%) compared to RA-ILD (0.0%)

ILD, interstitial lung disease; RA, rheumatoid arthritis; RA-BR, rheumatoid arthritis-associated bronchiectasis; SD, standard deviation.