Liu H.-Y.WEN-CHE TSAIMING-JANG CHIUTang L.-Y.Lee H.-J.Shyu Y.-I.L.Wang W.-S.2020-11-032020-11-0320191533-3175https://www.scopus.com/inward/record.uri?eid=2-s2.0-85059311368&doi=10.1177%2f1533317518813548&partnerID=40&md5=4892b3ef88ad6140334caadf186fcd28https://scholars.lib.ntu.edu.tw/handle/123456789/519855Background: To examine the relationships between cognitive dysfunction status and quality of life. Methods: Secondary analysis of a nationwide population-based survey (?65 years) in Taiwan. The 5-dimension EuroQoL questionnaire (EQ-5D) was completed by 10 013 participants. Results: Participants with mild cognitive impairment (MCI; odds ratio = 4.88), very mild dementia (VMD; 7.96), or dementia (32.85) were more likely than those with normal cognition to report self-care problems. Participants with MCI (3.86), VMD (9.26), or dementia (31.61) were more likely to have usual-activity problems, and those with MCI (3.04), VMD (3.82), or dementia (9.23) were more likely to have mobility problems. Participants with MCI (2.10 and 2.14), VMD (2.77 and 2.18), or dementia (3.04 and 3.02) were more likely to report pain/discomfort and anxiety/depression. Conclusion: Dementia was negatively associated with EQ-5D, especially self-care, usual activities, and mobility. Mild cognitive impairment or VMD was also negatively associated, with VMD more negatively associated. Developing interventions for patients with specific cognitive dysfunctions is critical. ? The Author(s) 2018.[SDGs]SDG3aged; anxiety; Article; clinical evaluation; cognitive defect; controlled study; dementia; depression; exercise; female; functional status; grooming; health care survey; health status; human; interview; major clinical study; male; multivariate logistic regression analysis; neurologist; pain; population; psychologist; quality of life; questionnaire; reliability; scoring system; sleep quality; smoking; social behavior; Taiwan; the Clinical Dementia Rating Scale; the Taiwanese Mental State Evaluation; toileting; validity; very elderly; visual analog scale; walking difficulty; cognitive defect; cross-sectional study; dementia; health survey; self care; severity of illness index; Taiwan; Aged; Aged, 80 and over; Cognitive Dysfunction; Cross-Sectional Studies; Dementia; Female; Health Surveys; Humans; Male; Quality of Life; Self Care; Severity of Illness Index; Taiwanjournal article10.1177/1533317518813548305182212-s2.0-85059311368