Tree drawing test and drawing process

JRCT ID: jRCT1030210661

Registered date:11/03/2022

Basic Information

• Recruitment status: Pending
• Health condition(s) or Problem(s) studied: schizophrenia (including schizophrenia-type disorders and delusional disorders)
• Date of first enrollment: 11/03/2022
• Target sample size: 60
• Study type: Other

Intervention(s)

1. Puzzle task
2. Baum Test
3. Figure division Task
4. Comments on tasks 1 to 3
5. Brief Assessment of Cognition in Schizophrenia (BACS) Japanese version
6. Other questions such as demographic data

Outcome(s)

Primary Outcome

1. Puzzle task (time required: 8 minutes)
2. Baum Test (Time required: about 5 minutes)
3. Figure division Task (about 7 minutes)
5. Brief Assessment of Cognition in Schizophrenia (BACS) Japanese version (total time: about 15 minutes)

Secondary Outcome

4. Comments on tasks 1 to 3 (required time: about 5 minutes)
6. Other questions such as demographic data

Key inclusion & exclusion criteria

• Age minimum: Not applicable
• Age maximum: Not applicable
• Gender: Both

Include criteria

(1) Patients
1. Schizophrenic patients (including schizophrenia-type disorder and delusional disorder) were diagnosed according to DSM5 (APA, 2013) at Tsuruga hospital.
2. The physicians determine that they are able to participate in this study.
3. All participants provided written consent to participate in this study.
4. The patients must be at least 20 years old.
5. The study will be conducted until the number of patients reaches 30 or more.
(2) Healthy subjects
1. Undergraduate and graduate students at Gradeuate school of medical sciences, Kitasato University
2. Undergraduate and graduate students at the School of Letters or Arts and Sciences, Waseda University 3. The Healthy subjects are recruited as volunteers for this study
4. A total of 30 participants

• Exclude criteria: the physicians determine that schizophrenic patients cannot participate in this study

Related Information

• Primary Sponsor: Yumi Iwamitsu
• Secondary Sponsor: Japan Society for the Promotion of Science,Kitasato University Graduate School of Medical Sciences