Table 4.
Percentage of change points in terms of increasing/decreasing trend in node position sequence of a referral path
| Year | 2007 | 2008 | 2009 | 2010 | 2011 |
|---|---|---|---|---|---|
| Clustering coefficient | 75.0 | 74.9 | 74.9 | 74.8 | 74.7 |
| Betweenness centrality | 74.9 | 74.7 | 74.8 | 74.7 | 74.5 |
| Eigenvector centrality | 74.3 | 74.2 | 74.2 | 74.1 | 74.0 |
| PageRank centrality | 74.8 | 74.6 | 74.7 | 74.6 | 74.5 |
| h-index | 70.7 | 70.6 | 70.8 | 70.8 | 70.8 |