Research Article

The Effects of Gene Polymorphisms in Interleukin-4 and Interleukin-6 on the Susceptibility of Rheumatoid Arthritis in a Chinese Population

Table 1

The clinical and demographic characteristics of all subjects.

VariablesCases ( )Control ( )

Sex (female/male)354/398367/431
Age (years)52.3 ± 16.352.1 ± 17.1
Disease duration (range)8.2 years (0.2–20.1)None