“…Another approach that could support the selection, recruitment, randomization, and data collection processes of clinical trials is routinely collected health data, such as electronic healthcare records, registries, or administrative claims data. 48,49 Although such sources are most likely to be applicable to pragmatic trials, they still provide additional advantages as they can inform trial feasibility (e.g. reduce cost, time, and resources), expand the research agenda in research questions otherwise not amenable to trials, maximize efficient trial design, and improve external validity.…”