A Transmembrane Polymorphism of Fcγ Receptor IIb Is Associated with Kidney Deficiency Syndrome in Rheumatoid Arthritis

Table 1

Demographic and clinical characteristics of RA.

	No kidney deficiency	Kidney deficiency
Male/female	31 (19.25%)/130 (80.75%)	38 (23.90%)/121 (76.10%)
Age at disease onset (years)
Disease duration (months)

Data are means (SD).
Significant () difference between RA patients with kidney deficiency and no kidney deficiency.