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Table 1 Sample size estimates for the full cohort analysis; p denotes the proportion with a single genetic variant and Δ denotes the corresponding minimum detectable difference

From: Statistical design of personalized medicine interventions: The Clarification of Optimal Anticoagulation through Genetics (COAG) trial

  

Standard Deviation of PTTR

  

20%

25%

30%

  

Power

Power

Power

p

Δ

80%

90%

80%

90%

80%

90%

0.4

5.49%

550

730

860

1140

1238

1642

0.5

4.58%

792

1050

1238

1642

1782

2364

0.6

3.67%

1238

1642

1932

2564

2782

3692