Table 1.

Measures of global medical device trade network.

Category	Measure	2001	2003	2005	2008	2010	2013	2015	2018	2020
Node centrality	Average node degree	36.28	39.40	40.72	45.78	45.25	47.53	46.25	47.55	46.95
	Out-degree centralization	67.20%	64.00%	62.54%	58.66%	59.37%	56.82%	57.72%	56.08%	56.42%
	In-degree centralization	35.16%	37.08%	36.90%	35.59%	37.57%	40.15%	42.33%	36.85%	37.19%
Network connectivity	Network density	0.3769	0.4093	0.4274	0.472	0.4707	0.4924	0.4858	0.5084	0.5158
	Weighted clustering coefficient	0.499	0.519	0.533	0.560	0.557	0.574	0.569	0.584	0.586
	Average characteristic path length	1.539	1.519	1.501	1.471	1.465	1.453	1.455	1.431	1.419