Validity of the CogState Schizophrenia Battery in Japanese Patients
Author Information
Author(s): Yoshida Taisuke, Suga Motomu, Arima Kunimasa, Muranaka Yasuko, Tanaka Tsunehiko, Eguchi Satoshi, Lin Crystal, Yoshida Sumiko, Ishikawa Masanori, Higuchi Yuko, Seo Tomonori, Ueoka Yoshinori, Tomotake Masahito, Kaneda Yasuhiro, Darby David, Maruff Paul, Iyo Masaomi, Kasai Kiyoto, Higuchi Teruhiko, Sumiyoshi Tomiki, Ohmori Tetsuro, Takahashi Kiyohisa, Hashimoto Kenji
Primary Institution: Chiba University
Hypothesis
The study aims to evaluate the criterion and construct validity of the Japanese language version of the CogState Schizophrenia Battery (CSB-J) in Japanese patients with schizophrenia.
Conclusion
The CSB-J is a useful and rapid computerized battery for assessing broad cognitive domains in Japanese patients with schizophrenia.
Supporting Evidence
- The CSB-J was sensitive to cognitive impairment in Japanese patients with schizophrenia.
- There was a significant positive correlation between the CSB-J composite score and the BACS-J composite score.
- The study included a well-matched control group for comparison.
- The CSB-J was easy to use and had a high completion rate.
- Factor analysis revealed a three-factor model for cognitive performance.
- Demographic variables did not differ significantly between groups.
- Patients showed significantly higher depressive symptoms compared to controls.
- The CSB-J covers more cognitive domains than the BACS-J.
Takeaway
This study shows that a special test for brain function can help doctors understand how well Japanese patients with schizophrenia think and remember.
Methodology
Forty patients with schizophrenia and 40 healthy controls were tested using the CSB-J and BACS-J, with data analyzed for validity and cognitive performance.
Potential Biases
Potential bias due to the small sample size and the exclusion of certain cognitive assessments.
Limitations
The sample size was small, and some subtests were not assessed for criterion-related validity.
Participant Demographics
40 patients with schizophrenia and 40 healthy controls, matched for age and gender.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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