Background Patellofemoral pain (PFP) has traditionally been viewed as self-limiting, but recent studies show that a large proportion of patients report chronic knee pain at long-term follow-up. We ...

You’ve probably seen a Likert Scale even if you don’t know the ubiquitous measurement tool by name. In its traditional form, a researcher presents a statement followed by five response options of ...

A cross-sectional prospective study of 38 consecutive cancer patients who switched from morphine to oral methadone was performed. The intensity of pain before, during, and after the switching period ...

You’ve probably seen a Likert Scale even if you don’t know the ubiquitous measurement tool by name.  In its traditional form, a researcher presents a statement followed by five ...