Table 3.

Mean differences in CRP and SAA values measured by the two analytical assays (nepholometry and ELISA) in COPD patients and healthy controls

	Entire cohort (n = 133)	COPD (n = 88)	Controls (n = 45)	p value*
CRP (mg/L)	2.7 (9.4)	3.9 (11.1)	0.4 (4.1)	0.009
SAA (mg/L)	0.31 (14.3)	1.2 (17.2)	-1.4 (5.9)	NS

NS, not significant

* p value calculated by unpaired Student's t test.