Analysis of intermunicipal journeys for cardiac surgery in Brazilian Unified Health System (SUS): an approach based on network theory

Table 1 Indices of the Vitória da Conquista intermunicipal network of cardiovascular surgery. Bahia, 2008 to 2020

Indices	Network indices		Statistical indices
Indices	In-degree^a	Out-degree^b	Incoming Flow^c	Outgoing Flow^d	Mean length of incoming arcs (km)^e	Mean length of outgoing arcs (km)^f
2008	0	1	0	35	NA	326.52
2009	0	1	0	43	NA	326.52
2010	8	1	13	25	131.57	326.52
2011	35	1	66	5	103.33	326.52
2012	59	2	162	6	127.25	274.36
2013	71	1	183	1	167.57	326.52
2014	75	2	257	3	146.33	274.36
2015	90	1	307	4	156.54	326.52
2016	89	1	362	5	159.52	326.52
2017	93	1	398	6	147.80	326.52
2018	103	1	467	2	169.32	326.52
2019	104	1	445	10	200.45	326.52
2020	115	1	456	4	194.98	326.52

NA [not applicable]
^aIn-degree: number of different municipalities from which patients traveled for the procedure
^bOut-degree: number of different municipalities to which patients traveled for the procedure
^cIncoming Flow: number of patients that arrived at the municipality for the procedure
^dOutgoing Flow: number of residents that traveled to other municipalities for the procedure
^eMean length of incoming arcs (km): mean distance traveled by the patient to arrive at the municipality in which the procedure is conducted
^fMean length of outgoing arcs (km): mean distance traveled by the patient to go to the municipality in which the procedure is conducted

ISSN: 1475-9276