Table 1.

Population stratification configurations for discrete population structure

Configuration	Group	Population 1	Population 2	Population 3	Population 4
C1	Case	200	300
	Control	300	200
C2	Case	250	250
	Control	0	500
C3	Case	225	175	100
	control	175	100	225
C4	Case	165	335	0
	Control	0	165	335
C5	Case	175	150	100	50
	Control	75	100	150	175
C6	Case	125	125	250	0
	Control	0	250	125	125

Configurations C1 and C2 contain two subpopulations; configurations C3 and C4 contain three subpopulations; and configurations C5 and C6 contain four subpopulations.