Association of frailty index with congestive heart failure, all-cause and cardiovascular mortality among individuals with type 2 diabetes: a study from National Health and Nutrition Examination Surveys (NHANES), 1999-2018.

"Declarations Ethics approval and consent to participateThe studies involving human participants were reviewed and approved by the National Center for Health Statistics (NCHS) Research Ethics Review Board (ERB). The patients/participants provided written informed consent to participate in this study. Consent for publicationNot applicable. Competing interestsThe authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential competing interests. Competing interests The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential competing interests."

"Funding None."