Brief Psychiatric Screening Questionnaire in Parkinson’s Disease

Table 3

Performance of BPQ groups assessed by area under the curve (AUC) and sensitivity, specificity, and efficiency coefficient of optimal cutoff scores.

Targets	AUC	Optimal cutoff scores	Sensitivity (%)	Specificity (%)	Efficiency coefficient
GDS ≥ 5	0.896 (<0.0001)	BPQ-Depression > 6	75	90	0.88
Highest decile of STAI-Y2	0.979 (<0.0001)	BPQ-Anxiety > 17	100	93	0.91
Highest decile of apathy scale	0.736 (0.015)	BPQ-Apathy > 7	70	65	0.51