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Table 3 Parameter estimates obtained from fitting the 3-parameter sigmoid curve to the data presented in the example using a Bayesian approach (Gibbs sampling) (fitted using WinBUGS®)

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

Isolate Posterior Parameter Estimates – median (95% range)
  EC 50 γ Emax
Artesunate (A) 21.3 (17.5 – 30.5) 59.7 (14.0 – 98.1) 0.95 (0.91 – 0.99)
Halofantrine (B) 43.7 (34.8 – 61.0) 61.3 (15.3 – 98.0) 1.09(1.00 – 1.19)
Mefloquine (C) 154 (123 – 215) 61.8 (16.2 – 98.2) 1.5(1.10 – 1.20)
Mefloquine (D) 150 (119 – 217) 57.0 (9.85 – 97.9) 1.25 (1.09 – 1.40)
Chloroquine (E) 873 (710 – 1294) 42.6 (6.2 – 78.2) 0.78 (0.71 – 0.85)
Chloroquine (F) 540 (461 – 673) 3.75 (2.52 – 55.2) 0.92 (0.88 – 0.97)