The impact of respiratory reactance in oscillometry on survival in patients with idiopathic pulmonary fibrosis.

"Declarations Ethics approval and consent to participateThis study was conducted in accordance with the Declaration of Helsinki and approved by the institutional review board of the Sapporo Medical University Hospital (approval number 332–234; ref. May 16, 2022). The need for Informed Consent was waived by the institutional review board of the Sapporo Medical University Hospital due to the retrospective nature of the study. Consent for publicationNot applicable. Competing interestsHN, YM, and HC received grants from Boehringer Ingelheim Co. TI, KF, AS, MT, KK, and SH have no competing interests to disclose. Competing interests HN, YM, and HC received grants from Boehringer Ingelheim Co. TI, KF, AS, MT, KK, and SH have no competing interests to disclose."

"Funding This study was supported by Grants-in-Aid for Scientific Research of the Japanese Society for the Promotion of Science (Grant Number 21K16145)."