Clinical effectiveness of decoction form of herbal medicine in primary care treatment of allergic rhinitis: A retrospective cohort study.

"Conflict of interest The authors have no conflicts of interests to declare."

"Funding This study was supported by a grant from the Guideline Center for Korean Medicine, National Institute for Korean Medicine Development (HI16C0275)."

"KM doctors who received training on the use of standardized case report forms and used it in their clinical practice were involved in this study. The 17 KM clinics obtained informed consent from their patients during their initial visit for the purpose of utilizing their medical data in the research. The study protocol was exempted from ethical review by the Institutional Review Board of the Korea Institute of Oriental Medicine on January 20, 2022 (IRB No, I-2201/001-001), and registered in the National Clinical Trial Registry, Clinical Research Information Service (KCT0007242, https://trialsearch.who.int/?TrialID=KCT0007242). This study was reported in accordance with the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) guideline (Supplementary Table 1). Study registration: This study has been registered at Clinical Research Information Service (KCT0007242)."