Table 1  A comparison of the power, type 1 error, and expected or actual number of tests used for all three designs. Group sizes of 2, 5, and 10 were used in the group testing designs

Case Control Design

0.843

0.041

15,000,000

Standard Group Testing Design

Group Size 2

0.843

0.041

10,163,667

Group Size 5

0.843

0.041

8,713,995

Group Size 10

0.843

0.041

10,498,037

Two-Phase Group Testing Design

Group Size 2

0.867

0.055

8,356,222

Group Size 5

0.859

0.053

4,775,891

Group Size 10

0.860

0.060

4,125,408