title: Korean version of mini mental status examination for dementia screening and its' short form.
abstract: OBJECTIVE
  We developed a Korean version of Mini-Mental Status Examination (MMSE) optimized for screening dementia (MMSE-DS) and its' short form (SMMSE-DS).
  
  
  METHODS
  We constructed the MMSE-DS using the items of the two current Korean versions of MMSE and then construct the SMMSE-DS consisted of 13 items from the MMSE-DS based on the diagnostic accuracy of individual items for dementia. We investigated reliability and validity of MMSE-DS and SMMSE-DS on 1,555 subjects (1,222 nondemented controls, 333 dementia patients). We compared the diagnostic accuracy of the SMMSE-DS with that of the three full Korean versions of MMSE, and examined its' age- and education-specific optimal cutoff scores for dementia.
  
  
  RESULTS
  The internal consistency obtained by Cronbach's coefficient alpha was 0.826. The inter-rater reliability and test-retest reliability were 0.968 (p<0.001) and 0.825 (p<0.001), respectively. It showed significant correlation with the Clinical Dementia Rating (CDR) (r=-0.698, p<0.05) and the three full Korean versions of MMSE (r=0.839-0.938, p<0.001). The area under the receiver operator curve for dementia of the SMMSE-DS was larger than those of the three full Korean versions of MMSE (p<0.001). Age, education and gender explained 19.4% of the total variance of SMMSE-DS scores. The optimal cutoff scores for dementia of the SMMSE-DS were estimated differently by age and educational attainment of the subjects.
  
  
  CONCLUSIONS
  The SMMSE-DS was found to be accurate, brief and portable instrument for screening dementia in Korean elders, and may be particularly useful for screening dementia in elderly populations with wide variation in educational levels.
authors.affiliation: Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Korea.
authors.forename: Tae Hui
authors.initials: TH
authors.lastname: Kim
authors.forename: Jin Hyeong
authors.initials: JH
authors.lastname: Jhoo
authors.forename: Joon Hyuk
authors.initials: JH
authors.lastname: Park
authors.forename: Jeong Lan
authors.initials: JL
authors.lastname: Kim
authors.forename: Seung Ho
authors.initials: SH
authors.lastname: Ryu
authors.forename: Seok Woo
authors.initials: SW
authors.lastname: Moon
authors.forename: Il Han
authors.initials: IH
authors.lastname: Choo
authors.forename: Dong Woo
authors.initials: DW
authors.lastname: Lee
authors.forename: Jong Chul
authors.initials: JC
authors.lastname: Yoon
authors.forename: Yeon Ja
authors.initials: YJ
authors.lastname: Do
authors.forename: Seok Bum
authors.initials: SB
authors.lastname: Lee
authors.forename: Moon Doo
authors.initials: MD
authors.lastname: Kim
authors.forename: Ki Woong
authors.initials: KW
authors.lastname: Kim