An evaluation of common risk factors for prolonged grief disorder using the international classification of diseases-11 criteria.

A cross-sectional survey design was used to assess risk factors and PG-13 in three distinct samples of bereaved adults. The PG-13 was either parsed dichotomously using the ICD-11 diagnostic criteria to indicate presence of PGD or summed to index general grief severity.Results: When using ICD-11 diagnostic criteria, only female gender and high levels of pre-loss contact were identified in separate samples as increasing risk of diagnosis. The most replicable results across samples were found when using the summed PG-13 symptom scores. When using the PG-13 total score, younger age and more pre-loss contact with the deceased were associated with higher symptom levels, which replicated in all three studies.Conclusions: This study provided evidence that the extant literature using summed scores to explore risk factors might not generalize to the ICD-11 diagnostic criteria.