Nice to meet everyone; I’m a clinical informaticist who is new to OHDSI tools. My team is trying to wrangle data from a large patient registry that uses the OMOP Common Data Model, and I’ve run into some walls with using ATLAS.
Our goal is to investigate the relationships between several risk factors (e.g., presence of diabetes mellitus) and several outcomes (e.g., limb amputation).
Our organization offers us only ATLAS for accessing data; we do not have direct Postgres access, so we cannot use HADES. And we’ve run into some trouble with ATLAS when trying to determine incidence rates.
ATLAS seems to be able to define patient cohorts defined by the presence of a condition or event, such as when an amputation procedure occurs or when an observation for diabetes mellitus occurs, and we can use the Incidence Rates tab to get incidence rates on these cohorts (e.g., amputations in people with diabetes mellitus).
However, we also need to get the incidence rates for control cohorts (e.g., amputations in people who do not have diabetes mellitus; people with diabetes mellitus who have not had amupations), and we cannot figure out a way to define these control cohorts or get incidence rates for them. Is ATLAS capable of doing this?