Table 3.

Risk factors of dementia in the Korean elderly

^*Subgroups with or without specific risk factor were compared to each other for prevalence. Other statistical methods were not used; ^†Risk factors for cognitive impairment (MMSE-K ≤ 23) only were reported; ^‡χ² method was used to show significant difference among AD, VaD and non-dementia groups for exposure to each risk factor. However, post-hoc analyses to identify specific relationships between each group were not performed; ^§Defined by recipients of public medical insurance for the destitute. AD, Alzheimer's disease; VaD, vascular dementia; CO, carbon monoxide; PY, pack-year; GDS-K, Korean version of the geriatric depression scale; SGDS-K, Korean version of geriatric depression scale short form.