Who is pregnant? Defining real-world data-based pregnancy episodes in the National COVID Cohort Collaborative (N3C)
JAMIA Open. 2023 Aug 16;6(3):ooad067. doi: 10.1093/jamiaopen/ooad067. eCollection 2023 Oct.
ABSTRACT
OBJECTIVES: To define pregnancy episodes and estimate gestational age within electronic health record (EHR) data from the National COVID Cohort Collaborative (N3C).