Table 1 Different factors considered in the simulation study.

From: Development of the generalized ridge estimator for the Poisson-Inverse Gaussian regression model with multicollinearity

Factor

Notation

Values

Sample size

n

30, 75, 150, 200, 300, 400

Degree of correlation

\(\rho ^2\)

0.8, 0.85, 0.9, 0.95, 0.99

Dispersion parameter

\(\phi\)

2, 4, 6

Number of explanatory variables

p

3, 6, 9

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