method
NegativeBinomialResults.
llr_pvalue
The chi-squared probability of getting a log-likelihood ratio statistic greater than llr. llr has a chi-squared distribution with degrees of freedom df_model.
statsmodels.discrete.discrete_model.NegativeBinomialResults.llr
statsmodels.discrete.discrete_model.NegativeBinomialResults.lnalpha