TABLE 4.

Prevalence of Subcutaneous Nodules and ILD in RA Cohorts, Present and Previous Reports

Source First Author (ref)	Location	Period of Observation	n	Prevalence of ExRA	Prevalence of Nodules	Prevalence of ILD
PR	California, USA	2006–2010	274	21.5%	17.2%	3.6%
Myasoedova (26)	Minnesota, USA	1995–2007	463	50.1%	23.7%	4.1%
Calguneri (6)	Turkey	1988–2003	526	38.4%	18.1%	4.8%
Carmona (7)	Spain	1999–2000	788	36.2%	24.5%	3.7%
Cimmino (8)	Italy	1991	587	40.9%	16.7%	4.2%
Kim (20)	Korea	NR	405	21.5%	8.4%	3.0%
Turesson (37)	Minnesota, USA	1955–1994	609	40.6%	28.2%	5.6%

Abbreviations: NR = not reported, PR = present report.