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. Author manuscript; available in PMC: 2010 Nov 9.
Published in final edited form as: J Biopharm Stat. 2009;19(3):437–455. doi: 10.1080/10543400902800486

Table VI.

Simulation Results Based on 10,000 Realizations for Distribution 5

Traditional Method CRM with Escalation/De-escalation Decisions Based on Complete Cohorts CRM with Escalation/De-escalation Decisions Based on Incomplete Cohorts
Dose Actual Toxicity Probability Percent Chosen Experimentation Percentage Percent Chosen Experimentation Percentage Percent Chosen Experimentation Percentage
1 30% 32.5% (55.1%)* 74.3% 43.5% (28.4%)* 62.9% 44.8% (28.0)* 61.9%
2 40% 10.8% 20.5% 25.3% 30.9% 24.0% 30.5%
3 52% 1.7% 5.0% 2.6% 5.7% 3.1% 6.8%
4 61% 0% 0.6% 0.2% 0.5% 0.2% 0.8%
5 76% 0% 0.0% 0.0% 0.0% 0.0% 0.0%
6 87% 0% 0.0% 0.0% 0.0% 0.0% 0.0%
Median Sample Size (Range) 9 (3–27) 9 (2–26) 10 (2–29)
Median % Toxicity (Range) 33.3% (11–100%) 35.7% (11–100%) 37.5% (12–100%)
% of Trials Revisiting a Dose with ≥ 2 DLTs - 24.7% 43.1%
% of Trials with ≥ 3 DLTs at a Dose 29.8% 29.1% 36.2%