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Dive into the research topics where Sayaka Sato is active.

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Featured researches published by Sayaka Sato.


Clinical Practice & Epidemiology in Mental Health | 2014

The Effects of the Combination of Cognitive Training and Supported Employment on Improving Clinical and Working Outcomes for People with Schizophrenia in Japan

Sayaka Sato; Kazuhiko Iwata; Shunichi Furukawa; Yasuhiro Matsuda; Norifumi Hatsuse; Emi Ikebuchi

Background: In Japan, Job assistance for SMI have been not active. Compared with mental retardation, employment rate of SMI was low. The needs of the effective job assistance for SMI are growing. The purpose of this study was to determine the effectiveness of the combination approach of Cognitive Remediation (CR) and Supported Employment (SE) in clinical outcomes, including cognitive functioning and psychiatric symptoms besides vocational outcomes. Methods: The participants diagnosed with schizophrenia or schizoaffective disorder were assigned to CR+SE group (n=52) and SE group (n=57). CR comprised computer based trainings using COGPACK and group works. SE was individualized vocational support provided by employment specialists. Outcome measures included cognitive functioning, psychiatric symptoms, social functioning, performance of tasks as clinical outcomes, employment rate, duration of employment, and earned wage as vocational outcome. Results: CR+SE group displayed significantly better psychiatric symptoms (F=3.490, p<.10), interpersonal relations (F=11.695, p<.01), and social and cognitive functioning including verbal memory (F=9.439, p<.01), digit sequencing (F=5.544, p<.05), token motor tasks (F=6.685, p<.05), and overall cognitive functioning (F=8.136, p<.01). We did not find any significant difference between two groups in terms of employment rate and earned wage. Discussions: This is the first controlled study to determine the effectiveness of CR on vocational outcomes in Japan. The results showed that CR and SE programs were feasible in Japan and that CR using COGPACK had favorable effects on cognitive functioning, psychiatric symptoms, and social functioning, which is consistent with previous researches.


Psychiatry and Clinical Neurosciences | 2010

Development of a clinical pathway for long-term inpatients with schizophrenia

Miharu Nakanishi; Kanae Sawamura; Sayaka Sato; Yutaro Setoya; Nobuo Anzai

Clinical pathways have been defined as an optimal sequencing and timing of interventions by staff for a particular diagnosis or procedure, designed to better utilize resources, maximize quality of care and minimize delays. The aim of the present study was to develop a clinical pathway for long‐term inpatients with schizophrenia. A review of clinical records was conducted for 17 patients with schizophrenia who had stayed in one psychiatric hospital for >1 year, and who remained in the community >3 months after hospital discharge. A review of clinical routine records was conducted. The discharge process of each patient was expressed in a clinical pathway around phases and care components. They were integrated into one clinical pathway. The discharge process was divided into assessment and goalsetting, preparation, and discharge phases. Care components included discharge planning, daily activity, living environment, health management, and basic life skills. Discharge planning was an important care component that was combined with all three phases. A clinical pathway was developed from reviewing past patient records, and discharge planning was found to be an important care component, which was combined with all three phases: assessment and goalsetting, preparation, and discharge. Further study is needed to examine the validity of the pathway for use in other hospitals.


Psychiatry and Clinical Neurosciences | 2017

Does improvement of cognitive functioning by cognitive remediation therapy effect work outcomes in severe mental illness? A secondary analysis of a randomized controlled trial

Emi Ikebuchi; Sayaka Sato; Sosei Yamaguchi; Michiyo Shimodaira; Ayano Taneda; Norifumi Hatsuse; Yukako Watanabe; Masuhiro Sakata; Naoko Satake; Masaaki Nishio; Junichiro Ito

The aim of this study was to clarify whether improvement of cognitive functioning by cognitive remediation therapy can improve work outcome in schizophrenia and other severe mental illnesses when combined with supported employment.


Psychiatry and Clinical Neurosciences | 2012

Effects of psychosocial program for preparing long‐term hospitalized patients with schizophrenia for discharge from hospital: Randomized controlled trial

Sayaka Sato; Emi Ikebuchi; Nobuo Anzai; Shimpei Inoue

The aims of the present study were to revise the Community Re‐entry Program–Japanese version and to review the effectiveness of the revised Program, named the Discharge Preparation Program.


Psychiatric Rehabilitation Journal | 2017

Efficacy of cognitive rehabilitation using computer software with individuals living with schizophrenia: A randomized controlled trial in Japan.

Kazuhiko Iwata; Yasuhiro Matsuda; Sayaka Sato; Shunichi Furukawa; Yukako Watanabe; Norifumi Hatsuse; Emi Ikebuchi

Objective: Cognitive impairment is common in schizophrenia, and is associated with poor psychosocial functioning. Previous studies had inconsistently shown improvement in cognitive functions with cognitive remediation therapy. This study examined whether cognitive remediation is effective in improving both cognitive and social functions in schizophrenia in outpatient settings that provide learning-based psychiatric rehabilitation. This study is the first randomized controlled trial of cognitive remediation in Japan. Method: Study participants were individuals with schizophrenia from 6 outpatient psychiatric medical facilities who were randomly assigned either a cognitive remediation program or treatment as usual. The cognitive remediation intervention includes Cognitive training using computer software (CogPack; Japanese version) administered twice a week and a weekly group over 12 weeks and was based on the Thinking Skills for Work program. Most study participants were attending day treatment services where social skills training, psychoeducation for knowledge about schizophrenia, group activities such as recreation and sport, and other psychosocial treatment were offered. Cognitive and social functioning were assessed using the Brief Assessment of Cognition in Schizophrenia (BACS) and Life Assessment Scale for Mentally Ill (LASMI) at pre- and postintervention. Results: Of the 60 people with schizophrenia enrolled, 29 were allocated to the cognitive remediation group and 31 were allocated to the treatment as usual group. Processing speed, executive function, and the composite score of the BACS showed significantly greater improvement for the cognitive remediation group than the treatment as usual group. In addition, there was significant improvement in interpersonal relationships and work skills on the LASMI for the cognitive remediation group compared with the treatment as usual group. Changes from pretreatment to posttreatment in verbal fluency and interpersonal relationships were significantly correlated, as well as changes in attention and work skills. Conclusions and Implications for Practice: The present findings showed that providing cognitive remediation on addition to psychiatric rehabilitation contributed to greater improvement in both cognitive and social functioning than psychiatric rehabilitation alone. Cognitive remediation may enhance the efficacy of psychiatric rehabilitation improving social functioning.


Psychiatry and Clinical Neurosciences | 2014

Effects of risperidone and aripiprazole on neurocognitive rehabilitation for schizophrenia

Yasuhiro Matsuda; Sayaka Sato; Kazuhiko Iwata; Shunichi Furukawa; Norifumi Hatsuse; Yukako Watanabe; Nobuo Anzai; Toshifumi Kishimoto; Emi Ikebuchi

Methods to improve neurocognitive impairments are of important research interest. This study sought to examine the synergistic effects of neurocognitive rehabilitation and antipsychotics for schizophrenia.


International Journal of Psychiatry in Clinical Practice | 2014

Neurocognitive functioning in patients with first-episode schizophrenia 1 year from onset in comparison with patients 5 years from onset

Yasuhiro Matsuda; Sayaka Sato; Norifumi Hatsuse; Yukako Watanabe; Toshifumi Kishimoto; Emi Ikebuchi

Abstract Objective. The course of neurocognitive deficits in schizophrenia has not yet been established. Therefore, we followed patients with first-episode schizophrenia to verify the course of these deficits. Methods. In Study 1, tests of neurocognitive functioning were administered to patients with first-episode schizophrenia (FE group) every 6 months. Of the 26 patients who completed the baseline assessment, 19 completed a 6-month follow-up, and 13 completed a 1-year follow-up. In Study 2, 19 patients in FE group at 6-months when the neuropsychological measures was less influenced by psychotic symptoms and other patients who experienced schizophrenia 5-years earlier (5-year group) were compared. Results. In Study 1, verbal memory, motor speed, and executive functions significantly improved at the 1-year follow-up. In Study 2, patients in 5-year group performed worse in verbal memory and executive functions than patients in FE at 6-month group, but marginally but significantly better in verbal fluency. Conclusions. Verbal memory, executive functions, and verbal fluency were significantly different between 5-year group and FE at 6-month group, and may indicate progression of schizophrenia. Executive functions may reflect the state of psychosis. Working memory and processing speed which did not change significantly from onset are needed to verify the course in further research.


Neuropsychological Rehabilitation | 2018

Feasibility and effectiveness of a cognitive remediation programme with original computerised cognitive training and group intervention for schizophrenia: a multicentre randomised trial.

Yasuhiro Matsuda; Tsubasa Morimoto; Shunichi Furukawa; Sayaka Sato; Norifumi Hatsuse; Kazuhiko Iwata; Mieko Kimura; Toshifumi Kishimoto; Emi Ikebuchi

ABSTRACT Devising new methods to improve neurocognitive impairment through cognitive remediation is an important research goal. We developed an original computer programme termed the Japanese Cognitive Rehabilitation Programme for Schizophrenia (JCORES) that provides cognitive practice across a broad range of abilities. The current study examined for the first time whether a cognitive remediation programme, including both computerised cognitive training using JCORES and group intervention such as enhancing meta-cognition and teaching strategies, is more effective than treatment as usual for improving neurocognitive and social functioning. Sixty-two outpatients with schizophrenia were randomised to either a cognitive remediation group or a control group. Participants engaged in two computerised cognitive training sessions and one group meeting per week for 12 weeks. The average number of total sessions attended (computerised cognitive practice + group intervention) was 32.3 (89.7%). The cognitive remediation group showed significantly more improvements in verbal memory, composite score of the Brief Assessment of Cognition in Schizophrenia, Japanese version (BACS-J), and general psychopathology on the Positive and Negative Syndrome Scale (PANSS) than the control group. These findings demonstrate that a cognitive remediation programme is feasible in Japan and is a more effective way to improve neurocognitive functioning and psychiatric symptoms.


PLOS ONE | 2018

Development of a scale to assess motivation for competitive employment among persons with severe mental illness

Natsuki Sasaki; Sayaka Sato; Sosei Yamaguchi; Michiyo Shimodaira; Norito Kawakami

Background The employment rate among people with severe mental illness has recently increased, though it is still low. The motivation to work appears to be an important role as an intermediate outcome measure in vocational rehabilitation programs. In addition, measuring the work motivation for people with severe mental illness appears to be essential to identify candidates who are likely to benefit and monitor candidates’ motivation in a supported employment program. This study aimed to develop a new measure for assessing both intrinsic and extrinsic motivation to work among people with severe mental illness, as there are currently no well-established instruments of this kind. Methods A focus group interview and review of previous qualitative research were used to identify possible items for inclusion in the new scale. A provisional scale was constructed and further refined for content and format based on feedback from a researcher and also three peer workers with severe mental illness. The resulting provisional 38-item version of the scale was completed by 136 respondents with severe mental illness, and we performed exploratory factor analysis to identify latent constructs within the new measure. The finalized scale was analyzed for test-retest reliability, internal consistency, and convergent validity. Result An exploratory factor analysis yielded a four-factor scale with 23 items. The finalized 23 items had high internal consistency (Cronbach’s alpha = 0.91) and relatively high test-retest reliability (ICC = 0.83). The four subscales had fair internal consistency (Cronbach’s alpha ≥ 0.69) and good test-retest reliability (ICC ≥ 0.61). Convergent validity was weakly supported by the significant positive correlations with the overall question on motivation to work (r ≥ 0.19, p < 0.01). Besides these correlations, only the “Pressure from others” subscale was negatively and significantly correlated with the negative symptoms evaluated using the Positive and Negative Syndrome Scale (r = -0.18, p = 0.04). Conclusions This study used factor analysis to develop a new multidimensional scale assessing motivation for competitive employment among persons with severe mental illness. The scale showed acceptable levels of reliability and factor-based and convergent validity. The new measure can be used for measuring the motivation for competitive employment among people with severe mental illness, and it would be useful to identify candidates who are likely to benefit from a certain supported employment program, and to monitor interim progress of the state of participants’ motivation in a program.


Administration and Policy in Mental Health | 2018

Development and Validation of a Japanese Fidelity Scale for Supported Employment

Natsuki Sasaki; Sosei Yamaguchi; Michiyo Shimodaira; Sayaka Sato; Ayano Taneda; Koji Yoshida; Junichiro Ito

The Individual Placement and Support (IPS) model of supported employment is an evidence based practice. Although several agencies have been trying to implement the IPS-model since 2005 in Japan, there was no tool to assess the quality. This study developed a Japanese version of the 25-item Individualized Supported Employment Fidelity Scale (J-ISEF), a new Japanese fidelity tool for supported employment based on the IPS model. A working group consisting of researchers and practitioners was formed to develop J-ISEF based on IPS-25. Some experts of the group visited the community agencies in Vermont before the development process. Twenty-six eligible agencies were identified using snowball sampling, and 14 agencies of them agreed and participated at T1. We conducted three cross-sectional surveys (T1, T2 and T3), using the new scale. The first evaluation period (T1) was between September 2013 and February 2014, the second (T2) between September 2014 and February 2015, and the third (T3) between October 2015 and February 2016. High inter-rater reliability (ICC = 0.98 for the entire scale) was confirmed from T1 data. The total score and the service subscale total were positively correlated with employment rate (P < 0.05). A new fidelity scale, J-ISEF, is developed as a quality assessment tool for evidence-based supported employment programs in Japan. The evidence for its inter-rater reliability and criterion-related validity is promising.

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Junichiro Ito

National Institutes of Health

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Nobuo Anzai

Tokyo Metropolitan Matsuzawa Hospital

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