From: Reference genes for normalization of gene expression studies in human osteoarthritic articular cartilage
Group
Parameter
Knee OA
Hip OA
Hip control
No. of patients
8
10
Age, median (range) years
72 (67–77)
75 (66–85)
81 (72–91)
No. male/female
5/3
5/5
3/7
Collins grade, average (range)
3.4 (2–4)
3.7 (2–4)
0.7 (0–1)