Table 2.

Affected family-based control and transmission disequilibrium test analyses for single nucleotide polymorphism (SNP)1 and SNP2 in sample 1 of rheumatoid arthritis trio families

Allele	Affected family-based controls			Transmission disequilibrium test
	Rheumatoid arthritis cases	Controls	P	Transmission (%)	n	P
SNP1
A	0.360	0.320	0.39	54.4	90	0.39
G	0.640	0.680
SNP2
C	0.665	0.567	0.04	59.7	92	0.06
A	0.335	0.433

n, number of heterozygote parents.