Immunodiagnostic Significance of Anti-RA33 Autoantibodies in Saudi Patients with Rheumatoid Arthritis

Table 1

Demographic characteristics of the study population.

Variables	Mean (SD) or frequency (%)
	RA patients; ()	Non-RA patients; ()	Healthy controls; ()
Age (years)	46 14.5	44 17.6	27.6 6.7
Sex
Female	33 80.5	23 74.2	3 10.3
Male	8 19.5	8 25.8	26 89.6