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. Author manuscript; available in PMC: 2016 Jan 6.
Published in final edited form as: Ann Intern Med. 2015 Jan 6;162(1):11–17. doi: 10.7326/M14-2255

Table.

Parameters Used in the Stochastic Model

Parameter Symbol Distribution Used for
Uncertainty Analysis
Source (Reference)
Number of contacts during early phase CEarly Sampled from data 2014 Liberia; Supplement 1
Number of contacts during late phase for nonsurvivors CLate Sampled from data, between 1 and 5 Based on household size (22)
Incubation phase duration (d) η Triangular (mode 8, range [5, 15]) 3, 9, 15, 30
Late symptoms phase duration (d) ψ Uniform (range [1, 5]) 18, 21, 31, 32
Overall symptom duration (d) ν Triangular (mode 8, range [5, 14]) 18, 21, 26
Rate ratio of transmission risk r Evaluated 1995 Zaire, 2000 Uganda; Supplement 1 (8, 9)
Daily viral load stratified by survivorship Vs(t) Log normal* 2000 Uganda (8)
*

Viral load was measured based on the mean and SD counts of daily RNA copy levels over 14 d after symptom onset and are stratified by survivorship.

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