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Table 3 Fit statistics and comparison of models by LRT statistic and Bayes factors using the test set

From: Piecewise exponential models to assess the influence of job-specific experience on the hazard of acute injury for hourly factory workers

  Exponential Weibull Data-driven 2-piece exponential Hypothesis-driven 2-piece exponential
Fit statistics
Number of Parameters 8 9 9 9
Log-likelihood −32576.2 −32573.6 −32447.3 −32468.2
BIC (Smaller is better) 65263.6 65272.2 65019.6 65061.5
Model comparison
LRT Statistic
Bayes Factor
Exponential NA 5.21* 257.9*** 216.0***
1.000 0.996 0.997
Weibull 5.21* NA Not nested Not nested
1.000   0.996 0.997
Data-driven 2-piece exponential 257.9*** Not nested NA Not nested
1.004 1.004   1.001
Hypothesis-driven 2-piece exponential 216.0*** Not nested Not nested NA
  1.003 1.003 0.999  
  1. Note: * denotes significance at the 0.05 level, ** denotes significance at the 0.01 level, and *** denotes significance at the 0.001 level.
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BMC Medical Research Methodology

ISSN: 1471-2288

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