Table 3 The median coefficient observed in the 1000 simulations and the minimum and maximum values of the C-statistic

Indegree

4268

\(-\)0.018***

3.78***

2.6***

1.46***

0.915–0.919

227

\(-\)0.01*

\(-\)0.10

0.1

1.33***

0.665–0.741

211

0

\(-\)3.04***

-2.81***

0.39***

0.735–0.763

Instrength

4268

-0.016**

3.79**

2.61**

1.47**

0.92–0.925

227

\(-\)0.02**

\(-\)0.11

0.11

1.33***

0.673–0.745

211

0

\(-\)3.03***

\(-\)2.79***

0.38***

0.727–0.764