Table 3

Pearson correlation between density measurements, osteoarthritis level (K-L Score), and age.

Vertebral Endplate
AgeDbulkDappDmatDoptDash
K-L ScoreM.627**.367*-.353*-.353*.338*-.039
F.428*.680**-.510**-.504**.354-.355
Age M1.189.073.073-.228.290
F1.342-.525**-.570**-.136-.273
Vertebral Cancellous Bone
Age Dbulk Dapp Dmat Dopt Dash
K-L Score M.686**.372*-.364*-.568**.260-.502**
F.628**.463*-.513*-.746**.323-.763**
Age M1.309-.168-.344*-.277-.311
F1.186-.399-.843**-.059-.694**

  • Values represent r2. Negative sign (-) is for a negative correlation whereas an absence of sign stands for a positive one. M: male; F: female; K-L Score: Kelgren-Lawrence score; Dbulk: bulk density; Dapp: apparent density; Dmat: material density; Dopt: optical density; Dash: ash density.

  • ↵** Correlation is significant at 0.01 at the level (2-tailed).

  • ↵* Correlation is significant at 0.05 at the level (2-tailed).