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Table 5 Simulation results: proportion of replications where the maximum likelihood estimator is larger than the true value of the parameter for the exponential model

From: Estimating time-to-onset of adverse drug reactions from spontaneous reporting databases

λ p n Naive estimator TBE
0.05 0.25 100 100% 61.6%
   500 100% 55.3%
0.05 0.50 100 100% 55.3%
   500 100% 50.4%
0.05 0.80 100 100% 51.1%
   500 100% 51.7%
1 0.25 100 100% 54.8%
   500 100% 50.7%
1 0.50 100 100% 53.2%
   500 100% 48.0%
1 0.80 100 100% 50.0%
   500 100% 51.0%
  1. Calculations were made on the replications where there was no problem of maximization. Abbreviations : TBE truncation-based estimator.
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