Table 1.

Information about the collected datasets

	1	2	3	4	5	6	7
Data	GSE55457 [29]	GSE55235 [29]	GSE12021 [30]	GSE1919 [31]	GSE117999	GSE114007 [32]	E-MTAB-6266 [33]
Type	Array	Array	Array	Array	Array	RNA-Seq	RNA-Seq
Tissue	Synovial	Synovial	Synovial	Synovial	Cartilage	Cartilage	Cartilage
Normal	10	10	9	5	12	18	10
OA	10	10	10	5	12	20	65