Validity, Reliability, and Responsiveness of the Thai Palliative Care Outcome Scale Staff and Patient Versions Among Cancer Patients

The Thai POS is valid and reliable. These findings enable researchers and clinicians to apply the POS in primary research and routine clinical practice to both determine the effectiveness of interventions and improve care. This is the first validation in the region of a multidimensional person-centered outcome measure designed specifically for patients and families with advanced disease.