Table 2.

Top 10 nodes by degree, closeness, betweenness, and PageRank in the overall graph.^a

Rank	Degree	Closeness	Betweenness	PageRank
1	Death	Orthopedics	Death	Death
2	Minor injury	Emergency medicine	Orthopedics	Minor injury
3	Severe injury	Failure to perform preoperative evaluationb	Minor injury	Severe injury
4	Orthopedics	Missed diagnosisb	Emergency medicine	Orthopedics
5	Inadequate informed consentb	Obstetrics and gynecology	Obstetrics and gynecology	Inadequate informed consentb
6	Obstetrics and gynecology	Delay in diagnosisb	Gastroenterology	Obstetrics and gynecology
7	Emergency medicine	Gastroenterology	Inadequate informed consentb	Delay in treatmentb
8	Other comorbidities	Inadequate informed consentb	Severe injury	Emergency medicine
9	Gastroenterology	Failure to recognize complicationsb	Cancer	Gastroenterology
10	Delay in treatmentb	Cancer	General surgery	Failure to recognize complicationsb

^aThe definitions of all the nodes can be found in Table 1.

^bThese are error nodes; all errors are described in Multimedia Appendix 1.