Data obtained from 1,141 subjects (976 men and 165 women) aged above 60 years was analyzed from the Gwangju Dementia and Mild Cognitive Impairment Study. All subjects completed the study questionnaire including demographic characteristics, history of current and past illnesses, drughistory, Korean Mini-Mental State Examination (K-MMSE), and cut down, annoyed, guilty feelings, eye-opener (CAGE), Short Form of Geriatric Depression Scale-Korean version (SGDS-K).