> For the complete documentation index, see [llms.txt](https://docs.bcbi.brown.edu/codiac-for-health/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.bcbi.brown.edu/codiac-for-health/ursa-ri/datasets/syntheticmass.md).

# SyntheticMass

## Overview

SyntheticMass is a Synthea-generated data set that contains realistic but fictional residents of the state of Massachusetts. The synthetic population aims to statistically mirror the state population in terms of demographics, disease burden, vaccinations, medical visits, and social determinants. [\[1\] ](#references)Refer to the [SyntheticMass website](https://synthea.mitre.org/about) for more information.

There are several data sets available on the [SyntheticMass downloads page](https://synthea.mitre.org/downloads). 

* Complete SytheticMass data sets: "SyntheticMass Data Version 2 (24 May, 2017)". This ZIP file is quite large (21GB), so make sure you move the file to a location with enough storage before attempting to unzip. 
* Sample data sets (<100MB) containing 100 or 1,000 patient records
* Specialized data sets that have been generated using Synthea by other study teams. These include  COVID-19 data sets, a Childhood Obesity data set and more.

The following versions are available for each data set.

* CSV ([data dictionary](https://github.com/synthetichealth/synthea/wiki/CSV-File-Data-Dictionary) describing all CSV tables)
* C-CDA (xml files)
* FHIR (json files)

## References

1. MITRE Corporation. (n.d.). [About Synthea](https://synthea.mitre.org/about). Retrieved May 1, 2024.

## Resources

### Articles

* Walonoski J, Klaus S, Granger E, Hall D, Gregorowicz A, Neyarapally G, Watson A, Eastman J. [**Synthea™ Novel coronavirus (COVID-19) model and synthetic data set**](https://pmc.ncbi.nlm.nih.gov/articles/PMC7531559/). Intell Based Med. 2020 Nov;1:100007. doi: 10.1016/j.ibmed.2020.100007. Epub 2020 Oct 2. PMID: 33043312; PMCID: PMC7531559.
* Walonoski J, Kramer M, Nichols J, Quina A, Moesel C, Hall D, Duffett C, Dube K, Gallagher T, McLachlan S. [**Synthea: An approach, method, and software mechanism for generating synthetic patients and the synthetic electronic health care record**](https://pmc.ncbi.nlm.nih.gov/articles/PMC7651916/). J Am Med Inform Assoc. 2018 Mar 1;25(3):230-238. doi: 10.1093/jamia/ocx079. Erratum in: J Am Med Inform Assoc. 2018 Jul 1;25(7):921. PMID: 29025144; PMCID: PMC7651916.

### Links

* [SyntheticMass Website](https://synthea.mitre.org/about)


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