Longitudinal MRI Data in Nondemented and Demented Older Adults

This dataset, OASIS_long_tbl_df, is a tibble containing a longitudinal collection of MRI data from 150 subjects aged 60 to 96, obtained as part of the Open Access Series of Imaging Studies (OASIS). Each participant completed two or more MRI sessions, with visits spaced at least one year apart, resulting in a total of 373 imaging sessions. The dataset includes both nondemented and demented older adults and provides comprehensive demographic, clinical, and neuroimaging measures for each visit.

Usage

data(OASIS_long_tbl_df)

Format

A tibble with 373 observations and 15 variables:

Subject ID

Unique identifier for each subject (character)

MRI ID

Identifier for each MRI session (character)

Group

Clinical group classification (character)

Visit

Visit number for longitudinal assessment (numeric)

MR Delay

Time in days between MRI sessions (numeric)

M/F

Sex of the participant (character)

Hand

Handedness of the participant (character)

Age

Age in years at the time of the visit (numeric)

EDUC

Years of education (numeric)

SES

Socioeconomic status score (numeric)

MMSE

Mini-Mental State Examination score (numeric)

CDR

Clinical Dementia Rating score (numeric)

eTIV

Estimated total intracranial volume (numeric)

nWBV

Normalized whole-brain volume (numeric)

ASF

Atlas scaling factor (numeric)

Source

Data taken from Kaggle: https://www.kaggle.com/datasets/jboysen/mri-and-alzheimers

Details

The dataset name has been kept as OASIS_long_tbl_df to avoid confusion with other datasets in the R ecosystem. This naming convention helps distinguish this dataset as part of the NeuroDataSets package and assists users in identifying its specific characteristics. The suffix tbl_df indicates that the dataset is a tibble (a modern data frame). The original content has not been modified in any way. Variable names and values are provided exactly as they appear in the source.