Table 3

p-values for the ASAP randomization group effect at 3 months for a variety of count models

MODEL

p-value

Poisson

.018

over-dispersed Poisson

.489

Negative binomial

.458

zero-inflated Poisson

.542

zero-inflated negative binomial

.489

t-test

.495

Wilcoxon

.805

Permutation

.746

Horton et al. BMC Medical Research Methodology 2007 7:9   doi:10.1186/1471-2288-7-9