Relative Frequencies of Dementia of the Alzheimer Type and Vascular Dementia in Japanese Nursing Homes

摘要

Abstract:We have studied neuropathologically 200 aged nursing home residents (101 men and 99 women) autopsied between 1976 and 1985. Seventy‐three of the 200 showed dementia during life, that is, 27 and 55 of the residents in nursing homes and special nursing homes, respectively. The relative frequencies of SDAT and VD in nursing homes as a whole were the same (34). The relative frequencies of SDAT and VD in special nursing homes, where usually high concentrations of VD have been noted, were 21 and 52, respectively. A comparison of the results of our special nursing homes (SDAT‐.VD = 1:2.5) and nursing homes as a whole (SDAT:VD = 1:1) with those of Barnes and Raskind (SDAT:VD = 2:1) and Rovneret al.(SDAT:VD = 3:1) showed that the frequencies of VD in Japanese nursing homes are considerably higher than those in their American counterpa