LRTest contains the results of likelihood ratio tests
ChiSq:Value of the Chi-Square statistics corresponding to the performed test
df:Degrees of freedom of the Chi-Square statistics
pvalue:p-value of the Chi-Square statistics value, obtained from the Chi-Square distribution with df degrees of freedom
H0logLik:Logarithm of the Likelihood function under the null hypothesis
H1logLik:Logarithm of the Likelihood function under the alternative hypothesis
signature(object = "LRTest"): show S4 method for the LRTest-class