Table 1.

An example of a decision table

Subjecta	SNP1	SNP2	SNP3	Status
1	1	2	2	Case
2	2	1	2	Case
3	2	2	3	Case
4	1	2	1	Control
5	2	1	2	Control
6	1	2	3	Case

^aThe decision table contains all subjects in a study and all SNPs in a specific gene. SNP ∈ {1, 2, 3, missing}, where 1 = aa, 2 = aA, 3 = AA, Status ∈ {Case, Control}. This table was adapted from that in Pawlak [24].