Single Immunoglobulin IL-1-Related Receptor (SIGIRR) Gene rs7396562 Polymorphism and Expression Level in Rheumatoid Arthritis

Table 1

The demographic characteristics and laboratory parameters of RA patients.

Characteristics	RA patients ()
Age (years),
Sex, female/male	434/83
Age of onset (years),
Disease duration (years),
Treatment duration (years),
Anti-CCP-positive no. (%)	417 (80.7)
RF-positive no. (%)	398 (76.9)

RA: rheumatoid arthritis; RF: rheumatoid factor; Anti-CCP: anticyclic citrullinated peptide.