Barrett-Connor specialised in healthy ageing and women's health.[4] In particular, she championed studying cardiovascular disease in women as well as men.[2] She was recruited to the faculty at the University of California, San Diego in 1972.[1] In 1972 Barrett-Connor founded the Rancho Bernardo Heart and Chronic Disease Study (RBS), which involved over 6,000 people in Rancho Bernardo, San Diego.[6] For the study, Barrett-Connor recruited people from Rancho Bernardo, and studied the connection between lipids and heart disease.[6] She managed to recruit almost 70% of the Rancho Bernardo population.[1] She selected the area as it was reported as having a healthy population. She has collected data for over forty years, including frozen blood samples, and transcends changes in lifestyle and cholesterol.[6] She investigated how family history, fat distribution, cholesterol, physical activity and cigarette smoking impact chronic diseases.[6] Barrett-Connor used the RBS to study sex differences in cardiovascular disease.[7] As of 2011, one third of the participants still reported on their health, and half still have health tests at the Bernado Center Drive Clinic.[6]
Alongside RBS, Barrett-Connor led the Diabetes Prevention Program Outcomes Study.[13] She was also interested in overlooked issues in men's health, including osteoporosis, and was involved with the Osteoporotic Fractures in Men Study and Testosterone Trials.[2] In 1971 Barrett-Connor established the UCSD Epidemiology and Biostatistics Course.[2]
Barrett-Connor was married to James Connor, a paediatrician at the University of California, San Diego. She had three children, Jonathan, Caroline and Steven as well as two-step children, James-Davis and Susan.[1] Barrett-Connor died on June 10, 2019.[1]
^Varela, Gerardo; Barrett, Elizabeth L.; Keegan, Caroline J.; Kean, B. H. (1959-05-01). "The Diarrhea of Travelers". The American Journal of Tropical Medicine and Hygiene. 8 (3): 353–357. doi:10.4269/ajtmh.1959.8.353. ISSN0002-9637. PMID13661538.
^Barrett-Connor, E.; Ferrara, A. (1998-08-01). "Isolated Postchallenge Hyperglycemia and the Risk of Fatal Cardiovascular Disease in Older Women and Men: The Rancho Bernardo Study". Diabetes Care. 21 (8): 1236–1239. doi:10.2337/diacare.21.8.1236. ISSN0149-5992. PMID9702426. S2CID25718428.