Psychometrics of BE-PSD-V2.0 and its correspondence with PANSS and CGI-S.
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Takeuchi Hiroyoshi, Hashimoto Naoki, Takekita Yoshiteru, Yamamoto Maeri, Miyata Jun, Ohi Kazutaka, Muraoka Hiroyuki, Koeda Michihiko, Miura Itaru, Oya Kazuto, Kawamata Yasushi, Yoshino Yuta, Hirano Yoji, Hori Hikaru, Sugihara Genichi, Matsumoto Junya, Ito Satsuki, Sawagashira Ryo, Toyomaki Atsuhito, Watanabe Hayato, Koshikawa Yosuke, Funatsuki Toshiya, Tanaka Yuki, Nakajima Shinichiro, Homma Saki, Kaneko Yuka, Shimomura Yutaro, Kawai Keita, Kawai Chikako, Kubota Manabu, Igarashi Hiroyuki, Otsuka Sadao, Fujikane Daisuke, Suzuki Yuhei, Kobayashi Yuri, Matsuda Yuki, Kitajima Tomoko, Ochi Shinichiro, Yasuda Hideaki, Hashimoto Ryota
Аннотация
METHODS: This cross-sectional study was conducted at 18 institutes in Japan. We performed correlational analyses to test the convergent and divergent validity of the BE-PSD-V2.0. Inter-rater reliability was assessed using intraclass correlation coefficients (ICCs). The equipercentile equating method was employed to examine the linking of the BE-PSD-V2.0 with the PANSS and the CGI-S.
RESULTS: A total of 353 patients with schizophrenia spectrum disorders were included. Spearman's rank correlation coefficients between the BE-PSD-V2.0 item scores and their corresponding PANSS factor scores ranged from 0.64 to 0.86, indicating sufficient convergent validity. These specific correlation coefficients were consistently the highest among all item-to-factor comparisons, indicating sufficient divergent validity. In 34 patients, ICCs for the BE-PSD-V2.0 item and total scores ranged from 0.60 to 0.94, showing sufficient inter-rater reliability. Conversion tables were established between the BE-PSD-V2.0 total score and the PANSS total score, between the BE-PSD-V2.0 total score and the CGI-S score, and between the BE-PSD-V2.0 item scores and their corresponding PANSS factor scores. A correspondence between symptomatic remission criteria using the PANSS and BE-PSD-V2.0 was confirmed.
CONCLUSIONS: The BE-PSD-V2.0 possesses sufficient psychometric properties and corresponds to the PANSS and CGI-S. It is a sound and reliable brief rating scale for assessing symptoms in schizophrenia spectrum disorders, and its established conversion correspondences facilitate score interpretation within existing clinical paradigms for both clinical practice and research.