Table 3. Test of the neutrality-equilibrium model based on the site frequency spectrum at exon 2 of HLA-DRB1 in seven populations of China.

Population(n)	Tajima's D	P
Han(n = 98)	3.32	P = 0.0002
Mongolian_IM(n = 98)	2.96	P = 0.0005
Mongolian_YN(n = 206)	2.93	P = 0.0015
Hani(n = 134)	2.52	P = 0.0053
Dai(n = 130)	2.63	P = 0.0035
Yao(n = 120)	2.21	P = 0.0120
Wa(n = 154)	2.82	P = 0.0035