---
title: "Observational Health Data Sciences and Informatics (@ohdsi)"
description: "International research collaborative for large-scale health data analytics."
account: "ohdsi"
---

# Observational Health Data Sciences and Informatics

International research collaborative for large-scale health data analytics.

## APIs

4 public APIs with a stored document.
Each links to its markdown overview; the same address with
`/llms.txt` in place of `.md` lists its operations.
Changes across these APIs: https://skmtc.dev/ohdsi/feed.md

- [Health for Clinical Research](https://skmtc.dev/ohdsi/apis/health-for-clinical-research.md): Clinical research: define patient cohorts, run Kaplan-Meier analyses, and query patient datasets and concepts
- [data-connection](https://skmtc.dev/ohdsi/apis/data-connection.md): Clinical data: query OMOP CDM tables for people, conditions, drugs, measurements, visits and concept vocabularies
- [ALP bookmark service](https://skmtc.dev/ohdsi/apis/alp-bookmark-service.md): Bookmarks: list, look up by ID, add, update and delete saved bookmarks
- [Clinical Research](https://skmtc.dev/ohdsi/apis/clinical-research.md)