Interstitial lung disease in rheumatoid arthritis: Current concepts in pathogenesis, diagnosis and therapeutics

Table 1 Prevalence of rheumatoid arthritis-interstitial lung disease

Ref.	Number of patients	Study type	ILD (%)
Perez-Dorame et al[111]	34	Cross-sectional	34
Giles et al[154]	177	Cross-sectional	33
Yin et al[29]	71	Retrospective	24.9
Chen et al[10]	103	Cross-sectional	61
Solomon et al[155]	48	Retrospective	31
Richman et al[156]	274	Cross-sectional	3.6
Zou et al[157]	110	Cross-sectional	42.7
Mohd et al[158]	63	Cross-sectional	44
Al-Ghamdi et al[159]	74	Retrospective	10
Teh et al[160]	154	Cross-sectional	6.5
Bharadwaj et al[161]	140	Cross-sectional	9.29
Zrour et al[162]	75	Cross-sectional	49.3

ILD: Interstitial lung disease.