Table 2 TNFα genotypes and minor allele frequencies of the Newfoundland population.

	Genotype	NF PsA patients	Controls	OR	p Value
	G/G	181 (79.4%)	93 (90.3%)
TNF −238	G/A	45 (19.7%)	9 (8.7%)
	A/A	2 (0.9%)	1 (1.0%)
Allele F (A)		10.7%	5.3%	2.13	0.03
	G/G	146 (64.9%)	67 (65.1%)
TNF −308	G/A	75 (33.3%)	33 (32.0%)
	A/A	4 (1.8%)	3 (2.9%)
Allele F (A)		18.4%	18.9%	0.97	0.91
	C/C	191 (86.8%)	88 (85.4%)
TNF −857	T/C	28 (12.7%)	14 (13.6%)
	T/T	1 (0.5%)	1 (1.0%)
Allele F (T)		6.8%	7.8%	0.87	0.74
	C/C	167 (72.3%)	70 (68.0%)
TNF −863	A/C	60 (26.0%)	30 (29.1%)
	A/A	4 (1.7%)	3 (2.9%)
Allele F (A)		14.7%	17.5%	0.82	0.36
TNF −1031	T/T	128 (58.2%)	63 (61.2%)
	T/C	77 (35.0%)	33 (32.0%)
	C/C	15 (6.8%)	7 (6.8%)
Allele F (C)		24.3%	22.8%	1.09	0.69

NF, Newfoundland; OR, odds ratio; PsA, psoriatic arthritis; TNF, tumour necrosis factor.