Our study is a longitudinal population-based epidemiological SHIP-cohort study combined with a prospective, multi-centered, observational/interventional investigation. MV-FIT is an observational study of individuals aged 65 years or older with mGFR >30 mL/min (n=~820). All participants in the observational/interventional study will receive guideline-based, multi-factorial geriatric assessment, monitoring & managements (multi-component healthcare). Subjects will be stratified by mGFR. Objectives are 1) to implement multi-component healthcare specifically comprised of components to reduce frailty and incident falls, 2) to improve compliance and adherence to the multi-component healthcare for frailty and improvement of patient welfare, ability to live independently, quality-of-life, number of falls, referrals to nursing homes, all-cause mortality in primary care of the elderly, 3) to seek the elderly individuals' experience during the course of multi-factorial primary care intervention through In-depth interviews, 4) to clarify the burden of CKD on frailty and health status, and 5) to identify novel risk factors and mechanisms for frailty and pre-frailty. MV-FIT data will be corroborated by SHIP/SHIP-TREND data.