Term definitions related to biomarkers of joint damage in psoriatic arthritis.
| Biomarker | Disease-centered variable of biologic and pathological processes |
| Patient outcome | Patient-centered variable of how a patient “feels, functions, survives” |
| Risk factor | A variable that increases a person’s chance of developing a disease |
| Prognostic factor | Patient variable, such as age, family history, lifestyle, or stage of presentation, that is weighed in determining a prognosis |
| Surrogate outcome | Disease-centered variable that meets validation criteria |