© 1989 British Society for Rheumatology
Non-Contraceptive Hormones and Rheumatoid Arthritis: Possibilities of Using a Swedish Population-Based Cohort



* Department, of Medicine, Karolinska Institute at the Huddinge University Hospital S-141 86 Huddinge, Sweden
Departments of Surgery
Departments of Medicine, Section for Rheumatology
Obstetrics and Gynaecology, University Hospital, Uppsala Sweden
Correspondence to Dr. Allebeck
| Abstract |
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We report the possibility of, and the methodological problems associated with, using a large population based cohort of 23000 Swedish women, ascertained from a drug prescription database to have received non-contraceptive oestrogens; to further investigate the relationship between such therapy and the postulated protection against development of rheumatoid arthritis (RA). Although this study was primarily designed to look at cancer risk, it should be possible to study the relationship with RA.