3. Results
3.1. Paths of LOS according to hospital ownership
Fig. 2 shows the results of the hierarchical cluster analysis in the form of a dendrogram using single-linkage. Three clusters were formed from the 15 ownership-type groups. Twelve ownership-type groups formed a large cluster: from (2) national universities to (13) business enterprises. Two ownership type groups— (14) medical corporations and (15) individual physicians—formed a small cluster. And different from any of these, (1) the national government formed the third cluster. We labelled these three clusters as the public cluster, the private cluster, and the national government cluster on the basis of the spectrum of public to private ownership types that underlay the groupings