Background
Prolonged grief disorder (PGD) is now included as a diagnosis in international classification systems. Most research on PGD is based on Western populations, but first data from non-Western countries have recently become available. Little is still known about country-related effects on PGD's prevalence.
Objective
Determining possible causes of variations in the prevalence of PGD as defined by DSM-5-TR and ICD-11 within and between countries.