Psychometric properties of the Prolonged Grief Disorder-13 (PG-13) in bereaved Swedish parents

•The study showed that PG-13 is a valid measure of Prolonged Grief Disorder.•A principal component analysis supported a one-factor structure of the PG-13.•The criteria for Prolonged Grief Disorder were met by 16% of bereaved parents. This study aimed to validate the Swedish version of the Prolonged...

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