OASIS Aging-Dementia Longitudinal MRI

Description

This dataset, oasis_dementia_mri_df, is a data frame containing longitudinal neuroimaging and clinical data from 150 older adults (60-96 years) with repeated MRI scans over multiple visits. The study includes both nondemented and demented individuals, with 373 total imaging sessions featuring 3-4 T1-weighted scans per session.

Usage

data(oasis_dementia_mri_df)

Format

A data frame with 373 observations and 15 variables:

Subject.ID

Character: Unique subject identifier

MRI.ID

Character: Unique MRI session identifier

Group

Factor with 3 levels: Diagnostic group classification

Visit

Integer: Visit number

MR.Delay

Integer: Days since first visit

Gender

Character: Subject gender

Hand

Character: Handedness

Age

Integer: Subject age in years

EDUC

Integer: Years of education

SES

Integer: Socioeconomic status

MMSE

Integer: Mini-Mental State Examination score (0-30)

CDR

Numeric: Clinical Dementia Rating (0-3)

eTIV

Integer: Estimated total intracranial volume (mm³)

nWBV

Numeric: Normalized whole brain volume

ASF

Numeric: Atlas scaling factor

Details

The dataset name has been kept as 'oasis_dementia_mri_df' to avoid confusion with other datasets in the R ecosystem. This naming convention helps distinguish this dataset as part of the NeuroDataSets package. The suffix 'df' indicates that the dataset is a data frame. The original content has not been modified.

Source

Data taken from the jointest package version 1.0. Original study: Marcus, D.S. et al. (2007) Open Access Series of Imaging Studies (OASIS): Cross-sectional MRI Data in Young, Middle Aged, Nondemented and Demented Older Adults. Journal of Cognitive Neuroscience, 19(9), 1498-1507.