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Table 4 Estimates of EC50 obtained from fitting the 3-parameter sigmoid curve to the data presented in the Example using WinBUGS, with upper boundary of γ set to 30 or 50.

From: Overestimating resistance in field testing of malaria parasites: simple methods for estimating high EC50 values using a Bayesian approach

Isolate Posterior Estimate of EC50median (95% range)
  γ = 30 γ = 50
Artesunate (A) 22.2 (18.6 – 28.2) 21.9 (18.0 – 29.8)
Halofantrine (B) 46.5 (37.3 – 60.0) 45.2 (36.0 – 60.0)
Mefloquine (C) 165 (134 – 205) 161 (128 – 210)
Mefloquine (D) 157 (123 – 212) 153 (121 – 215)
Chloroquine (E) 913 (731 – 1260) 888 (719 – 1282)
Chloroquine (F) 539 (465 – 649) 540 (462 – 660)