Statistics for aggression by Argentine ants.

* P** PLogistic regression on displayed aggression by Argentine ants towards M. antarcticum, O. glaber and T. jocosus. The first two rows show the difference between aggressions of Argentine ants towards a species, with M. antarcticum as reference. The next three rows show aggression of Argentine ants depending on pheromone concentration with the control treatment as a reference. ß is the log-odds units, S.E. the standard errors associated with the coefficients, Wald the Wald chi-square value, df the degrees of freedom, P the statistical significance and Exp(ß) the odds ratio.