Is COVID-Somnia Fact or Fiction? by Isa Okajima

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Cross‐sectional analyses of factors associated with the presence and aggravation of chronic insomnia by symptom subtypes by Masumi Osao, Isa Okajima, Yuichi Inoue

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Prevalence and Factors Associated With the Risk of Delayed Sleep-Wake Phase Disorder in Japanese Youth by Sayaka Tomishima, Yoko Komada, Yoko Komada, Kosuke Tanioka, Kosuke Tanioka, Isa Okajima, Isa Okajima, Yuichi Inoue, Yuichi Inoue

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Effects of COVID-19-Related Anxiety and Sleep Problems on Loneliness and Feelings of School Refusal in Adolescents by Isa Okajima, Yukako Honda, Osamu Semba, Yoji Kiyota, Yasuo Tani

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Association of Sleep Reactivity and Anxiety Sensitivity with Insomnia-Related Depression and Anxiety among City Government Employees in Japan by Isa Okajima, Hiroshi Kadotani, on behalf of the NinJa Sleep Study Group

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Editorial: The impact of social isolation and loneliness on mental health and wellbeing by Hiroshi Kadotani, Isa Okajima, Keming Yang, Michelle H. Lim, Michelle H. Lim

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A psychometric analysis of the Japanese version of the clinically useful depression outcome scale supplemented with questions for the DSM‐5 anxious distress specifier (CUDOS‐A) by Yumi Aoki, Yoshikazu Takaesu, Yasuyuki Matsumoto, Hitoshi Sakurai, Takashi Tsuboi, Isa Okajima, Hisateru Tachimori, Yoko Komada, Koichiro Watanabe, Mark Zimmerman

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Assessing the Quick Inventory of Depressive Symptomatology Self-Report scores to predict continuous employment in mood disorder patients by Yasuyuki Matsumoto, Hitoshi Sakurai, Yumi Aoki, Yoshikazu Takaesu, Isa Okajima, Hisateru Tachimori, Masami Murao, Taku Maruki, Takashi Tsuboi, Koichiro Watanabe

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Development and validation of the Japanese version of the Hyperarousal Scale by Naoko Ayabe, Shun Nakajima, Isa Okajima, Ken Inada, Wataru Yamadera, Hidehisa Yamashita, Hisateru Tachimori, Yuichi Kamei, Masahiro Takeshima, Yuichi Inoue, Kazuo Mishima

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Development and acceptability of a decision aid for chronic insomnia considering discontinuation of benzodiazepine hypnotics by Yumi Aoki, Yoshikazu Takaesu, Masahiro Suzuki, Isa Okajima, Masahiro Takeshima, Akiyoshi Shimura, Tomohiro Utsumi, Nozomu Kotorii, Hidehisa Yamashita, Kenichi Kuriyama, Norio Watanabe, Kazuo Mishima

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Discrepancy between Subjective and Objective Measurements for the Evaluation of Medication Adherence—A Cross-Sectional Study in Patients with Cardiovascular Diseases by Motoyasu Miyazaki, Hitomi Hirata, Satoko Takaki, Momoko Misaki, Yukako Mori, Kaoko Tokura, Natsuki Sato, Akio Nakashima, Atsuko Yanagida, Isa Okajima, Hidenori Urata, Osamu Imakyure

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Delayed sleep–wake phase disorder and its related sleep behaviors in the young generation by Kunihiro Futenma, Kunihiro Futenma, Yoshikazu Takaesu, Yoshikazu Takaesu, Yoko Komada, Akiyoshi Shimura, Akiyoshi Shimura, Isa Okajima, Kentaro Matsui, Kentaro Matsui, Kentaro Matsui, Kosuke Tanioka, Kosuke Tanioka, Yuichi Inoue, Yuichi Inoue

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Treatment strategies for insomnia in Japanese primary care physicians’ practice: A Web-based questionnaire survey by Masahiro Takeshima, Hitoshi Sakurai, Ken Inada, Yumi Aoki, Kenya Ie, Morito Kise, Eriko Yoshida, Kentaro Matsui, Tomohiro Utsumi, Akiyoshi Shimura, Isa Okajima, Nozomu Kotorii, Hidehisa Yamashita, Masahiro Suzuki, Kenichi Kuriyama, Eiji Shimizu, Kazuo Mishima, Koichiro Watanabe, Yoshikazu Takaesu

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Treatment strategy for insomnia disorder: Japanese expert consensus by Yoshikazu Takaesu, Yoshikazu Takaesu, Hitoshi Sakurai, Yumi Aoki, Yumi Aoki, Masahiro Takeshima, Kenya Ie, Kenya Ie, Kentaro Matsui, Kentaro Matsui, Tomohiro Utsumi, Tomohiro Utsumi, Akiyoshi Shimura, Isa Okajima, Nozomu Kotorii, Nozomu Kotorii, Hidehisa Yamashita, Masahiro Suzuki, Kenichi Kuriyama, Kenichi Kuriyama, Eiji Shimizu, Eiji Shimizu, Kazuo Mishima, Koichiro Watanabe, Ken Inada

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