Table 4.

Genotype frequencies in rheumatoid factor positive rheumatoid arthritis, relative to negative

	RF+ cases (n = 42)	RF– (n = 63)	χ2	p	Odds ratio 95% CI
SNPs
TNFAIP3 rs2203926
T/T No. (%)	28 (66.7%)	50 (79.4%)
G/T No. (%)	11 (26.2%)	13 (20.6%)	0.767	0.381	1.511 (0.598-3.817)
G/G No. (%)	3 (7.1%)	0 (0.0%)	–	–	–
G allele No. (%)	17 (20.2%)	13 (10.3%)	4.051*	0.044*	2.206 (1.008-4.825)
TRAF1 rs10181488
G/G No. (%)	0 (0.0%)	27 (42.9%)
A/G No. (%)	30 (71.4%)	27 (42.9%)	–	–	–
A/A No. (%)	12 (28.6%)	9 (14.3%)	–	–	–
A allele No. (%)	54 (64.3%)	45 (35.7%)	16.511*	< 0.001*	3.240 (1.821-5.765)

RF⁺ – rheumatoid factor positive; RF^– – rheumatoid factor negative