Table 6.

The four selected item profiles.

Item	Attribute Pattern	P(00)	P(10)	P(01)	P(11)
3	B2-B4	0.12	0.83	0.89	0.94
8	B3-B4	0.29	0.65	0.74	0.88
13	B3-B5	0.22	0.52	0.45	0.78
11	B1-B4	0.18	0.34	0.42	0.76

P (00) represents the non-possession of neither barrier, P (10) represents the possession of the first barrier attribute, P (01) represents the possession of the second barrier attribute, and P (11) represents the possession of both barriers.