Table 2.

Prevalence of dementia in the elderly population of Korea

^*Crude prevalence rate; ^†Age and sex were standardized to Korean population; ^‡Authors stated that age and sex were standardized, without specifying target population; ^§Age and sex were standardized to the population structure of the surveyed area; ^∥Age was standardized to the population structure of the surveyed area; ^¶Age was standardized to Korean population; ^**Authors stated that prevalence was adjusted for the population of the surveyed area. AD, Alzheimer's disease; VaD, vascular dementia; NINCDS-ADRDA, National Institute of Neurologic and Communicative Disorders and Stroke and the Alzheimer's Disease and Associated Disorders Association; NINDS-AIREN, National Institute of Neurological Disorders and Stroke-Association Internationale pour la Recherche et l'Enseignement en Neurosciences; HIS: hachinski ischemic scale.