Skip to main content
. 2021 Sep 14;10:e68764. doi: 10.7554/eLife.68764

Appendix 1—table 3. Parameters and probability distributions for C. difficile.

Symbol Parameter Unit Distribution Reference Reference setting Notes
β Transmission rate day−1 Normal (0.00555, 0.000944) van Kleef et al., 2016 English hospitals (modeling study) Mean of point estimates of the daily probability of transmission from colonized patients (0.0037) and infected patients (0.0074)
α’ Endogenous acquisition rate day−1 Normal (0.0000253, 0.0000114) Durham et al., 2016 USA hospitals (modeling study) Proxy measure: the estimated daily rate of progression from colonization to infection in hospital patients, divided by the relative risk of progression in patients exposed to antibiotics
γ Natural clearance rate day−1 Normal (0.0119, 0.00170) Simor et al., 1993 Canadian care home Fit longitudinal colonization data using exponential decay model
fC Admission fraction (colonized) / Binomial (229, 0.048) / 229 Barbut, 1996 11 French hospitals Stool prevalence among asymptomatic patients
r Antibiotic resistance level / median 94.3%, (range 93.3–95.4%) estimated / Cumulative resistance level across simulated antibiotic consumption data and assumed antibiograms
ε Colonization resistance / 1–1 / Cauchy (52.85, 1.62) estimated / From expert opinion
η Resource competition / (1/γ)/(1/γ + Cauchy (121.11, 4.85)) estimated / From expert opinion
ϕ Ecological release / Cauchy (39.22 0.922) estimated / From expert opinion