Research Article

Empirical Examination of the Poisson Regression Residuals for the Evaluation of Influential Points

Table 2

Performance of Poisson regression residuals with different covariate distributions and p = 4.

Distribution of covariatesnChidevCsrpDFITsrpCsrdDFITsrdCIDFITICsraDFITsraCsrwDIFTsrw

Normal (0, 1)2559.659.675.110010010039.684.375.110075.1100
5044.744.776.496.276.492.154.292.876.476.476.496.2
10030.730.77897.27895.164.295.978787897.2
200202076.798.476.796.670.597.776.776.776.798.4

Normal (10, 3)2539.939.962.991.362.98332.885.962.962.962.991.3
5030.830.86996.26990.148.293.469696996.2
10024.324.372.898.372.896.359.997.572.872.872.898.3
20019.919.974997496.467.598.574747499

Gamma (0.5, 3)2568.968.975.280.975.278.932.971.875.275.275.280.9
5069.669.678.88678.883.849.281.378.878.878.886
10062.762.780.991.180.988.2638980.980.980.991.1
20054.354.385.196.585.194.269.785.385.185.185.196.5

Poisson (0.5)25646476.387.776.38338.880.576.376.376.387.7
5053.953.979.294.479.290.350.89079.279.279.294.4
10044.444.481.497.481.494.765.195.181.481.481.497.4
20033.733.783.999.683.998.573.398.883.983.983.999.6

Poisson (3)2555.955.974.391.874.385.338.583.374.374.374.391.8
5044.144.176.59676.591.852.993.576.576.576.596
100313178.798.678.796.762.297.578.778.778.798.6
20021.421.478.798.478.79770.797.678.778.778.798.4