Women, men, and rheumatoid arthritis: analyses of disease activity, disease characteristics, and treatments in the QUEST-RA study.

Erosions were more prevalent among women than men (64.3% versus 59.7%; P = 0.003), although the difference was not statistically significant in 'low' prevalence countries (53.6% versus 51.6%; P = 0.36) and was only marginally significant in 'high' prevalence countries (76.7% versus 71.9%; P = 0.041).

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