Table 1.

Cohort demographics including age, sex, and SF concentration of CCL22

Cohort	Age	Sex	Synovial fluid CCL22 conc. (ng/mL)	Synovial fluid CCL22 conc. (ng/mL) mean +SD
Normal	45	Female	0.15	0.17 ± 0.11
Normal	55	Female	0.16
Normal	57	Female	0.13
Normal	62	Female	0.41
Normal	49	Male	0.28
Normal	50	Male	0.04
Normal	52	Male	0.09
Normal	52	Male	0.10
Normal	57	Male	0.08
Normal	65	Male	0.23
OA	43	Female	1.38	1.63 ± 1.33
OA	51	Female	2.16
OA	52	Female	1.18
OA	54	Female	0.16
OA	55	Female	2.14
OA	55	Female	0.23
OA	61	Female	0.28
OA	64	Female	0.12
OA	50	Male	2.47
OA	52	Male	0.44
OA	52	Male	3.44
OA	58	Male	2.82
OA	64	Male	4.31

CCL22 levels were different between normal versus OA cohorts (p = 0.0034). Age was not different between the cohorts (p = 0.9086).