Table 2.

Hardy-Weinberg equilibrium for TNF-α polymorphisms in case and control groups according to expected (E) and observed (O) values.

	GG	GA	AA	Total	HWE p-value and χ2*
Control	TNF-α −308 G>A
E	70	27	3	100	p = 0.95, χ2 = 0.08
O	72	24	4	100
Case
E	75	23	2	100	p = 0.71, χ2 = 0.68
O	73	27	0	100
Control	TNF-α −238 G>A
E	64	32	4	100	p = 0.74, χ2 = 0.59
O	60	38	2	100
Case
E	73	25	2	100	p = 0.87, χ2 = 0.27
O	75	23	2	100

^*if the χ² ≤ 3.84 and the corresponding p ≥ 0.05 then the population is in HWE.