Initial validation of a comprehensive assessment instrument for bereavement-related grief symptoms and risk of complications: The Indicator of Bereavement Adaptation—Cruse Scotland (IBACS)

N=196 (44 male, 152 female) help-seeking, bereaved Scottish adults participated at two timepoints: T1 (baseline) and T2 (after 18 months). Four validated assessment instruments were administered: CORE-R, ICG-R, IES-R, SCL-90-R. Discriminative ability was assessed using ROC curve analysis. Concurrent validity was tested through correlation analysis at T1.

Predictive validity was assessed using correlation analyses and ROC curve analysis. Optimal IBACS cutoff values were obtained by calculating a maximal Youden index J in ROC curve analysis. Clinical implications were compared across instruments.

Results: ROC curve analysis results (AUC = .84, p <.01, 95% CI between .77 and .90) indicated the IBACS is a good diagnostic instrument for assessing complicated grief. Positive correlations (p < .01, 2-tailed) with all four instruments at T1 demonstrated the IBACS' concurrent validity, strongest with complicated grief measures (r =.82). Predictive validity was shown to be fair in T2 ROC curve analysis results (n = 67, AUC= .78, 95% CI between .65 and .92; p < .01).

Predictive validity was also supported by stable positive correlations between IBACS and other instruments at T2. Clinical indications were found not to differ across instruments. Conclusions: The IBACS offers effective grief symptom and risk assessment for use by non-clinicians.

Indications are sufficient to support intake assessment for a stepped model of bereavement intervention. Keywords: intake assessment, bereavement intervention, grief, counseling, validation The variabele 'ICI' represents the IBACS score. The depositor provided the files 'IBACS Data storage form' and 'Read Me' in DOCX format.

DANS added the PDF format of these files. The depositor provided the file 'ICI_valid_(final)' in SAV format. DANS added the POR and DTA formats of this file.