Association Between Menopausal Factors and the Risk of Seronegative and Seropositive Rheumatoid Arthritis: Results From the Nurses ’ Health Studies

ConclusionPostmenopause and natural menopause at an early age were strongly associated with seronegative RA, but only marginally with seropositive RA, suggesting potential differences in the etiology of RA subtypes.

Source: Arthritis Care and Research - September 21, 2017 Category: Rheumatology Authors: Camilla Bengtsson, Susan Malspeis, Cecilia Orellana, Jeffrey A. Sparks, Karen H. Costenbader, Elizabeth W. Karlson Tags: Original Article Source Type: research