Subjects and Methods: An olfactory test (5-2 method) was administered to 25 patients, classified into two groups by total test score relative to the total median score: the low score group (0-2 points) and the high score group (3-5 points). Scores of the following assessments were compared between the groups using the unpaired t-test and Mann-Whitney U test: nutrition assessment using the geriatric nutritional risk index (GNRI); intraoral condition assessment using the oral health assessment tool, Japanese version (OHAT-J); assessment of activities of daily living using the Barthel index (BI), and cognitive function assessment using the mini mental state examination, Japanese version (MMSE-J). The survey was conducted at regional comprehensive care units at Niigata Rinko Hospital between June 2018 and September 2018.