Inhomogeneity of immune cell composition in the synovial sublining: linear mixed modelling indicates differences in distribution and spatial decline of CD68+ macrophages in osteoarthritis and rheumatoid arthritis

Table 1 Demographic and clinical features

	All patients	RA	OA	RA vs. OA
	n = 20	n = 11	n = 9	p values
Age at surgery, yrs (±SD)	66.2 (±10.9)	63.5 (±10.6)	69.4 (±11.1)	0.233
Female, n (%)	14 (75.0)	9 (81.8)	6 (66.7)
CRP, mg/dl (±SD)	2.5 (±2.7)	3.7 (±3.2)	1.2 (±1.0)	0.001
Leucocytes,/μl (±SD)	8570.0 (±4784.4)	10,654.5 (±5639.0)	6022.2 (±1157.3)	0.001
RF, IU/ml (±SD)	71.5 (±156.9)	126.3 (±198.5)	4.4 (2.4)	<0.001
ESR, mm/h, (±SD)	22.2 (±20.9)	29.4 (±23.3)	14.1 (15.3)	0.079

Comparison by Student’s t test, significant results are printed in bold
RA rheumatoid arthritis, OA osteoarthritis, SD standard deviation, CRP C-reactive protein, RF rheumatoid factor, ESR erythrocyte sedimentation rate

ISSN: 1478-6362