I’m brand new to the OHDSI community, so apologies if these questions are a bit naive. My main question at the moment concerns access to databases. I want to leverage the OHDSI platform to better characterize the TRD population in the US. There are already some comprehensive OHDSI related studies examining depression treatment pathways and factors that predict TRD. However, I would like to build upon these studies and examine different parameters.
How can I go about gaining access to the databases used in the papers (MarketScan Commercial Claims and Encounters and Optum ClinFormatics), and are these databases already converted to the OMOP CDM? I realise that it is common courtesy to inform the original data holders but is this a necessity? Also, is there a catalog listing CDM converted databases?
If anyone knows of additional observational studies examining TRD, could you please share them. I’m doing an extensive literature review at the moment but I may overlook something important.
Thanks in advance for your help!