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. 2000 Mar 18;320(7237):771–773. doi: 10.1136/bmj.320.7237.771

Table 2.

Error rates for processes with multiple steps

No of steps Base error rate of each step
0.05 0.01 0.001 0.0001
1 0.05 0.01 0.001 0.0001
5 0.33 0.05 0.005 0.002
25 0.72 0.22 0.02 0.003
50 0.92 0.39 0.05 0.005
100 0.99 0.63 0.1 0.01