The prevalence of obstructive sleep apnea in Japanese asthma patients.

"data availability not applicable. declarations ethics approval and consent to participate the present study was reviewed and approved by iizuka hospital ethics committee (aih-17120"

"Declarations Ethics approval and consent to participateThe present study was reviewed and approved by Iizuka Hospital Ethics Committee (AIH-17120). Written informed consent was.obtained from each patient before their participation in the study. This study was registered in the UMIN Clinical Trial Registry (UMIN000034263)(http://www.umin.ac.jp/). Consent for publicationNot applicable. Conflict of interestNH reports personal fees from AstraZeneca and GlaxoSmithKline, and grants from Kyorin, outside the submitted work. KT reports grants and personal fees from AstraZeneca, Boehringer Ingelheim, Chugai, Eli Lilly, Kyorin, MSD, Nobelpharma, Novartis, Ono, Pfizer, Teijin, and grants from Astellas, GlaxoSmithKline, Kyowa Hakko Kirin, MiZ, Mochida, Nipro, Nippon Shinyaku, Taiho, Toyama Chemical, Tsumura, Sanofi, Shionogi, Torii, and personal fees from Bristol-Myers, Eisai, Meiji Seika, Mitsubishi Tanabe, Otsuka, Parexel, Sumitomo Dainippon, outside the submitted work. The rest of the authors have no conflict of interest. Conflict of interest NH reports personal fees from AstraZeneca and GlaxoSmithKline, and grants from Kyorin, outside the submitted work. KT reports grants and personal fees from AstraZeneca, Boehringer Ingelheim, Chugai, Eli Lilly, Kyorin, MSD, Nobelpharma, Novartis, Ono, Pfizer, Teijin, and grants from Astellas, GlaxoSmithKline, Kyowa Hakko Kirin, MiZ, Mochida, Nipro, Nippon Shinyaku, Taiho, Toyama Chemical, Tsumura, Sanofi, Shionogi, Torii, and personal fees from Bristol-Myers, Eisai, Meiji Seika, Mitsubishi Tanabe, Otsuka, Parexel, Sumitomo Dainippon, outside the submitted work. The rest of the authors have no conflict of interest."

"Funding No funding was received for conducting this study."

"Consecutive patients with asthma, who were 20 years of age or older, who gave their informed consent, were recruited from our outpatient clinic at Iizuka Hospital (Fukuoka, Japan) between August 31, 2017, and March 31, 2019. The diagnosis of asthma and disease severity were assessed according to the Global Initiative for Asthma (GINA) guidelines []. Patients who met any of the following criteria were not enrolled in the study : coexistence of any respiratory disease other than asthma, uncontrolled heart failure, neuromuscular disease. Patients who could not be evaluated a home sleep test and had incomplete data were excluded from the study (Fig. ).The present study was reviewed and approved by Iizuka Hospital Ethics Committee (AIH-17,120). This study was registered in the UMIN Clinical Trial Registry (UMIN000034263) (http://www.umin.ac.jp/). Declarations: Ethics approval and consent to participateThe present study was reviewed and approved by Iizuka Hospital Ethics Committee (AIH-17120). Written informed consent was.obtained from each patient before their participation in the study. This study was registered in the UMIN Clinical Trial Registry (UMIN000034263)(http://www.umin.ac.jp/).: Consent for publicationNot applicable.: Conflict of interestNH reports personal fees from AstraZeneca and GlaxoSmithKline, and grants from Kyorin, outside the submitted work. KT reports grants and personal fees from AstraZeneca, Boehringer Ingelheim, Chugai, Eli Lilly, Kyorin, MSD, Nobelpharma, Novartis, Ono, Pfizer, Teijin, and grants from Astellas, GlaxoSmithKline, Kyowa Hakko Kirin, MiZ, Mochida, Nipro, Nippon Shinyaku, Taiho, Toyama Chemical, Tsumura, Sanofi, Shionogi, Torii, and personal fees from Bristol-Myers, Eisai, Meiji Seika, Mitsubishi Tanabe, Otsuka, Parexel, Sumitomo Dainippon, outside the submitted work. The rest of the authors have no conflict of interest. Ethics approval and consent to participate: The present study was reviewed and approved by Iizuka Hospital Ethics Committee (AIH-17120). Written informed consent was.obtained from each patient before their participation in the study. This study was registered in the UMIN Clinical Trial Registry (UMIN000034263)(http://www.umin.ac.jp/)."