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Youth in foster care are more likely than non-foster care youth to experience posttraumatic stress disorder (PTSD). While research has identified maltreatment as a risk factor for PTSD, this research remains limited because it tends to only (a) examine a single type or dimension of maltreatment and ignore the polyvictimization and heterogeneity in exposure, and (b) study this relation across a short period time or retrospectively at the end of care.

The current study used survival analysis to simultaneously examine the influence of maltreatment characteristics on the risk of receiving a PTSD diagnosis at any time in care following entry into care.

: 291 youth (Mean age at entry = 9.71; 53 % female; 49 % Black) in foster care and their primary caregivers from a large, Midwestern county.

Information on PTSD diagnosis was extracted from Medicaid records, and information on …