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. Author manuscript; available in PMC: 2010 Jun 29.
Published in final edited form as: Biometrics. 2009 Aug 10;66(2):532–540. doi: 10.1111/j.1541-0420.2009.01302.x

Table 4.

Comparison of the summary R statistics and stopping percentages for conducting trials under the alternative utility definitions given in Table 2.

Utility A Utility B Utility C
Scenario R % none R % none R % none
1 0.71 0 0.57 0 0.63 0
2 0.81 1 0.68 1 0.45 1
3 0.85 0 0.77 0 0.86 0
4 0.78 0 0.83 0 0.79 0
5 0.67 85 0.66 89 0.80 61