Data from the three studies used in analysis in this paper. The three studies are SCANS, RUN DMC and ASPS. The dataset is the pooled dataset used to look at prediction of dementia using the simple MRI score and the amended MRI score. Fields are: Age-years Gender Dementia during follow-up - 1=dementia Years of education EF= Executive function PS= Processing speed Global=global cognitive score Diabetes mellitus - 1=yes smoking Hypertension 1=yes hypercholesterolaemia-1=yes Number of lacunes- zero or more than zero Fazekas white matter hyperintensity category Study data originated from -SCANS-RUN DMC ASPS Study1- differentiates which ASPS dataset data came from SVD simple score SVD amended score Fazekas score Lacune count CMB count