Tobacco-Derived Lipopolysaccharide, Not Microbial Translocation, as a Potential Contributor to the Pathogenesis of Rheumatoid Arthritis

Table 2

Cotinine levels (ng/ml) of the RA and control groups.

	RA		COPD		Healthy
	NTU	TU	NTU	TU	NTU	TU
	24	16	6	4	8	12
Median	0	77	0	76	0	95
Iqr	0	94	0	75	0	6
Min	0	5	0	17	0	93
Max	0	133	0	133	0	103

COPD—chronic obstructive pulmonary disease; RA—rheumatoid arthritis; NTU—nontobacco usage; TU—tobacco usage; Iqr—interquartile range.