Quantile regression for overdispersed count data: a hierarchical method

Journal of Statistical Distributions and Applications

Table 3 Outlier detection by different methods (C = 20) and different cutpoints

	Pairwise comparison exceedance	Exceedance against exponential mean	Standardised residual distance measure	Standardised log(W_iδ)	Adjusted boxplot rule^a
Lower Cutpoint Choices
Cutpoint	0.7	0.7	2	2	0.69
Sensitivity	0.938	0.908	0.946	0.986	0.922
Specificity	0.995	0.998	0.988	0.97	0.994
Youden Index	0.933	0.906	0.934	0.956	0.916
Higher Cutpoint Choices
Cutpoint	0.8	0.8	3	3	0.69
Sensitivity	0.618	0.738	0.658	0.648	0.922
Specificity	1	1	1	1	0.994
Youden Index	0.618	0.738	0.658	0.648	0.916