Human/ S. meleagridis strain III data
Dose |
Infected |
Non-infected |
Total |
158000 |
1 |
5 |
6 |
1.5E+06 |
5 |
1 |
6 |
7680000 |
6 |
0 |
6 |
1E+07 |
5 |
1 |
6 |
|
Goodness of fit and model selection
Model |
Deviance |
Δ |
Degrees
of freedom |
χ20.95,1
p-value
|
χ20.95,m-k
p-value
|
Exponential |
7.81 |
5.51 |
3 |
3.84
0.019
|
7.81
0.0501
|
Beta Poisson |
2.3 |
2 |
5.99
0.316
|
Beta-Poisson fits better than exponential; cannot reject good fit for beta-Poisson. |
|
Optimized parameters for the beta-Poisson model, from 10000 bootstrap iterations
Parameter |
MLE estimate |
Percentiles |
0.5% |
2.5% |
5% |
95% |
97.5% |
99.5% |
α |
8.85E-01 |
1.78E-01 |
2.91E-01 |
3.68E-01 |
1.40E+03 |
1.71E+03 |
8.24E+03 |
N50
|
5.24E+05 |
4.71E+04 |
1.20E+05 |
1.92E+05 |
1.19E+06 |
1.39E+06 |
1.90E+06 |
|
Parameter scatter plot for beta Poisson model ellipses signify the 0.9, 0.95 and 0.99 confidence of the parameters.
beta Poisson model plot, with confidence bounds around optimized model