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Table 3

Pooling statistics

Data setNumber of dosesBest fit modelMinimized devianceDFχ2α,n-kχ2α,1ParametersLD50
Pooling 2, 3, and 4 (Concentrations and doses*) 13 beta-Poisson 7.40 11 19.68 0.77 α = 0.226 N50 = 57,938 57,983 
α* = 0.226 N50* = 13,257 13,257* 
Data setNumber of dosesBest fit modelMinimized devianceDFχ2α,n-kχ2α,1ParametersLD50
Pooling 2, 3, and 4 (Concentrations and doses*) 13 beta-Poisson 7.40 11 19.68 0.77 α = 0.226 N50 = 57,938 57,983 
α* = 0.226 N50* = 13,257 13,257* 

*Denotes the parameters for the model fit based on exposure dose values.

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