Related Experiment Video
Updated: Jun 11, 2025

Methods for Studying Uterine Contributions to Pregnancy Establishment in an Ovariectomized Mouse Model
Published on: April 7, 2023
Which obstetrics-gynecology residency programs are training future reproductive endocrinology and infertility
Zachary S Anderson1, Erika P New2, Aaron D Masjedi1
1Department of Obstetrics and Gynecology, Keck School of Medicine, University of Southern California, Los Angeles, California.
Objective:
To identify where reproductive endocrinology and infertility (REI) fellows trained for residency.
Design:
Observational, cross-sectional study.
Setting:
Not applicable.
Subjects:
Reproductive endocrinology and infertility fellows.
Interventions:
Not applicable.
Main Outcome Measures:
Percentage of fellows who completed residency training at an institution with an REI fellowship program.
Results:
A total of 289 fellows were identified among the graduating fellowship classes from 2023-2027. Of those fellows, 69.9% completed residency at an institution that had an associated REI fellowship program, and 19.7% remained at the same institution for residency and fellowship. In the last 5 years, 34.4% of obstetrics and gynecology residency programs have had at least 1 resident enter REI fellowship.
Conclusions:
Most matriculated REI fellow physicians train at residency programs that have an associated REI fellowship program.
Related Concept Videos
Infertility in Females
Endometriosis, a condition characterized by abnormal growth of...
Observational Studies
There are three types of observational studies – Prospective, retrospective, and cross-sectional.
Prospective Study
Prospective studies, also known as longitudinal or cohort studies, are carried out by collecting future data from groups sharing similar characteristics. One...
Naturalistic Observations
Oogenesis

