Table 1.

Divisions and numbers of patients with each marker.

Division of markers	ω 1	ω 2
x 1(1)	n 1(1) 1	n 1(1) 2
x 1(2)	n 1(2) 1	n 1(2) 2
x 2(1)	n 2(1) 1	n 2(1) 2
x 2(2)	n 2(2) 1	n 2(2) 2
x 2(3)	n 2(3) 1	n 2(3) 2
⋮	⋮	⋮
x j(rj)	n j(rj) 1	n j(rj) 2
⋮	⋮	⋮
x d(rd)	n d(rd) 1	n d(rd) 2
⋮	⋮	⋮