Measures
The BPI is one of the most widely used measurement tools for assessing pain in clinical settings. It is a multidimensional tool addressing both the severity of pain
and the interference with activities caused by the pain
(Cleeland & Ryan, 1994). This tool was used initially to assess pain in patients with cancer and since its inception it has been used in more than 400 studies
worldwide in many different clinical settings (Cleeland, 2009