Associations between readmission and patient-reported measures in acute psychiatric inpatients: a study protocol for a multicenter prospective longitudinal study (the ePOP-J study).
Sosei Yamaguchi: 1Department of Community Mental Health & Law, National Institute of Mental Health, National Center of Neurology and Psychiatry, 4-1-1 Ogawa-Higashi, Kodaira, 187-8553 Japan. ORCID
Yasutaka Ojio: 1Department of Community Mental Health & Law, National Institute of Mental Health, National Center of Neurology and Psychiatry, 4-1-1 Ogawa-Higashi, Kodaira, 187-8553 Japan.
Junko Koike: 1Department of Community Mental Health & Law, National Institute of Mental Health, National Center of Neurology and Psychiatry, 4-1-1 Ogawa-Higashi, Kodaira, 187-8553 Japan.
Asami Matsunaga: 1Department of Community Mental Health & Law, National Institute of Mental Health, National Center of Neurology and Psychiatry, 4-1-1 Ogawa-Higashi, Kodaira, 187-8553 Japan.
Makoto Ogawa: 1Department of Community Mental Health & Law, National Institute of Mental Health, National Center of Neurology and Psychiatry, 4-1-1 Ogawa-Higashi, Kodaira, 187-8553 Japan.
Hisateru Tachimori: 2Translational Medical Center, National Center of Neurology and Psychiatry, 4-1-1 Ogawa-Higashi, Kodaira, 187-8553 Japan.
Akiko Kikuchi: 1Department of Community Mental Health & Law, National Institute of Mental Health, National Center of Neurology and Psychiatry, 4-1-1 Ogawa-Higashi, Kodaira, 187-8553 Japan.
Hiroshi Kimura: 4Department of Psychiatry, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670 Japan.
Ataru Inagaki: 6College of Education, Psychology and Human Studies, Aoyama Gakuin University, 4-4-25 Shibuya, Shibuya-ku, Tokyo, 150-8366 Japan.
Hiroyuki Watanabe: Department of Psychiatry, Gakuji-kai, Kimura Hospital, 6-19 Higashi-honcho, Chuo-ku, Chiba, 260-8670 Japan.
Yoshiki Kishi: 8Department of Psychiatry, Okayama Psychiatric Medical Center, 3-16 Shikata-Honmachi, Kita-ku, Okayama, Japan.
Koji Yoshida: 9Department of Human Care and Support, Toyo University, 48-1 Oka, Asaka, 351-8510 Japan.
Takaaki Hirooka: 10Department of Psychiatry, Kitasato University School of Medicine, 1-15-1 Kitazato, Minami, Sagamihara, 252-0374 Japan.
Satoru Oishi: 10Department of Psychiatry, Kitasato University School of Medicine, 1-15-1 Kitazato, Minami, Sagamihara, 252-0374 Japan.
Yasuhiro Matsuda: 11Department of Psychiatry, Nara Medical University School of Medicine, 840 Shijo, Kashihara, 634-8521 Japan.
Chiyo Fujii: 1Department of Community Mental Health & Law, National Institute of Mental Health, National Center of Neurology and Psychiatry, 4-1-1 Ogawa-Higashi, Kodaira, 187-8553 Japan.
BACKGROUND: Several previous observational studies have reported the risk factors associated with readmission in people with mental illness. While patient-reported experiences and outcomes have become increasingly important in healthcare, only a few studies have examined these parameters in terms of their direct association with readmission in an acute psychiatric setting. This project will investigate multiple factors associated with readmission and community living in acute psychiatric patients in Japan. This study will primarily investigate whether patient-reported experiences at discharge, particularly quality of life (QoL), are associated with future readmission and whether readmission after the index hospitalization is associated with changes in patient-reported outcomes during the study period. Here, we describe the rationale and methods of this study. METHODS: This multicenter prospective cohort study is being conducted in 21 participating Japanese hospitals, with a target sample of approximately 600 participants admitted to the acute psychiatric ward. The study has four planned assessment points: time of index admission (T1), time of discharge (from the index admission) (T2), 6 months after discharge from the index admission (T3), and 12 months after discharge from the index admission (T4). Participants will complete self-reported measures including a QoL scale, a subjective disability scale, and an empowerment- and self-agency-related scale at each assessment point; additionally, service satisfaction, subjective view of need for services, and subjective relationships with family members will be assessed at T2 and T3. We will assess the participants' hospitalization during the study period and evaluate several potential individual- and service-level factors associated with readmission and patient-reported experiences and outcomes. Multivariate analyses will be conducted to identify potential associations between readmission and patient-reported experiences and outcomes. DISCUSSION: The present study may produce evidence on how patient-reported experiences at discharge influence readmission and on the influence of readmission on the course of patient-reported outcomes from admission to community living after discharge. The study may contribute to improving care for both patients' subjective views of their own health conditions and their community lives in an acute psychiatric setting. University Hospital Medical Information Network-Clinical Trials Registry (UMIN-CTR) UMIN000034220. Registered on September 20, 2018.
