Brief Psychiatric Screening Questionnaire in Parkinson’s Disease

Table 2

(A) questions retained for further testing and (B) combination of questions used in the prediction models for each validated questionnaire.

---

(A) Final questions considered for the Brief Psychiatric Questionnaire

---

 (1) Do you often feel withdrawn?

 (2) Do you often feel that your life is empty?

 (3) Do you worry excessively over little things?

 (4) Do you put a lot of effort into things?

 (5) Do you usually start looking for something thrilling or exciting when nothing new is happening?

---

(B) Prediction models

 GDS—questions 1 and 2 (BPQ-Depression)

 STAI-Y2—questions 1, 2, 3 and 4 (BPQ-Anxiety)

 Apathy scale—question 5 (BPQ-Apathy)

---