Associations of age with rheumatoid factor and RA Moderate correlations were noted between age and Rheumatoid Factor (RF) levels (r = .457, p = 0.075) as well as between age and RA presence (r = .457, p = 0.075), though these did not reach statistical significance ( Fig. 3 ).
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Exploring the predictive power of antinuclear antibodies and Rheumatoid factor correlations in anticipating therapeutic outcomes for female patients with coexisting Sjögren's syndrome and Rheumatoid arthritis.
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