I Okajima

Affiliations
  • Department of Psychological Counseling, Faculty of Humanities, Tokyo Kasei University, Tokyo 173-8602, Japan.
ORCID: 0000-0003-3494-4328

Publications (8)

How Does E-mail-Delivered Cognitive Behavioral Therapy Work for Young Adults (18-28 Years) with Insomnia? Mediators of Changes in Insomnia, Depression, Anxiety, and Stress.

International journal of environmental research and public health
Avec: Ayaka Ubara , Noriko Tanizawa , Megumi Harata , Sooyeon Suh , Chien-Ming Yang , Xin Li , Isa Okajima

Psychometric properties of the Japanese version of the Insomnia Catastrophizing Scale and relationship of insomnia severity with catastrophic thoughts, safety behaviors, and dysfunctional beliefs.

Sleep medicine
Avec: Yuta Takano , Ayaka Ubara , Naho Machida , Rui Ibata , Isa Okajima

Presenteeism and sleep duration on workdays and days off.

Occupational medicine (Oxford, England)
Avec: Y Takano , I Okajima , T Ando , S Iwano , Y Inoue

Development and validation of the Japanese version of the Hyperarousal Scale.

BMC psychiatry
Avec: Naoko Ayabe , Shun Nakajima , Isa Okajima , Ken Inada , Wataru Yamadera , Hidehisa Yamashita , Hisateru Tachimori , Yuichi Kamei , Masahiro Takeshima , Yuichi Inoue , Kazuo Mishima

Development and validation of the Japanese version of the Restorative Sleep Questionnaire in community samples.

Sleep medicine
Avec: Rui Ibata , Yuta Takano , Naho Machida , Ayaka Ubara , Ryo Motoya , Isa Okajima

Degradation of Polylactic Acid Using Sub-Critical Water for Compost.

Polymers
Avec: Toshiharu Goto , Mikitaka Kishita , Yin Sun , Takeshi Sako , Idzumi Okajima

Validation of the Japanese version of the Sleep Hygiene Practice Scale.

Sleep medicine
Avec: Shintaro Hara , Shunsuke Nonaka , Miho Ishii , Yuko Ogawa , Chien-Ming Yang , Isa Okajima

Evaluation of Severity Levels of the Athens Insomnia Scale Based on the Criterion of Insomnia Severity Index.

International journal of environmental research and public health
Avec: Isa Okajima , Towa Miyamoto , Ayaka Ubara , Chie Omichi , Arichika Matsuda , Yukiyoshi Sumi , Masahiro Matsuo , Kazuki Ito , Hiroshi Kadotani

Réseau de co-auteurs

Isa Okajima 6 collaborations
Ayaka Ubara 4 collaborations
Chien-Ming Yang 2 collaborations
Yuta Takano 2 collaborations
Naho Machida 2 collaborations
Rui Ibata 2 collaborations
Noriko Tanizawa 1 collaboration
Megumi Harata 1 collaboration
Sooyeon Suh 1 collaboration
Xin Li 1 collaboration
Y Takano 1 collaboration
T Ando 1 collaboration
S Iwano 1 collaboration
Y Inoue 1 collaboration
Naoko Ayabe 1 collaboration
Shun Nakajima 1 collaboration
Ken Inada 1 collaboration
Wataru Yamadera 1 collaboration
Hidehisa Yamashita 1 collaboration
Hisateru Tachimori 1 collaboration
Yuichi Kamei 1 collaboration
Masahiro Takeshima 1 collaboration
Yuichi Inoue 1 collaboration
Kazuo Mishima 1 collaboration
Ryo Motoya 1 collaboration
Toshiharu Goto 1 collaboration
Mikitaka Kishita 1 collaboration
Yin Sun 1 collaboration
Takeshi Sako 1 collaboration
Idzumi Okajima 1 collaboration
Shintaro Hara 1 collaboration
Shunsuke Nonaka 1 collaboration
Miho Ishii 1 collaboration
Yuko Ogawa 1 collaboration
Towa Miyamoto 1 collaboration
Chie Omichi 1 collaboration
Arichika Matsuda 1 collaboration
Yukiyoshi Sumi 1 collaboration
Masahiro Matsuo 1 collaboration
Kazuki Ito 1 collaboration
Hiroshi Kadotani 1 collaboration