Too much information? The use of extraneous information to support decision-making in emergency settings

Ofir Ben-Assuli, Ofer Arazy, Nanda Kumar, Itamar Shabtai

Research output: Contribution to journalArticlepeer-review


Decision-makers in emergency settings need to employ the breadth of evidence available so as to inform critical judgments, yet the acute time pressure suggests that in some cases only partial information could be employed. Investigating this tension, the current study focuses on the usefulness of extraneous information that arrives from outside the organization and supplements the information that is available through local information systems. Namely, we explore the extent to which the use of Health Information Exchanges (HIEs)—a network that integrates patients’ clinical information across medical organizations and points of care—facilitates diagnosis decisions in hospitals’ emergency departments (EDs). Adopting the lens of cognitive decision-making theory, we advance hypotheses regarding the moderating effects of the tasks’ cognitive requirements (diagnosis complexity) and clinicians’ time availability (ED crowdedness) on the relation between the use of extraneous information (in the form of HIE data) and decision quality (ED revisit rate). Our empirical investigation employs complete field data collected from a network of hospitals, capturing over half-a-million patient ED encounters. The results reveal that, in general, ED clinicians’ use of the HIE improves decision quality, as reflected in reduced patient revisits to the ED. However, when diagnosis complexity is low, this effect is reversed, such that HIE use is associated with increased ED revisit rates. Our discussion highlights the conditions under which extraneous information contributes to better decision-making and calls for a mindful use of interorganizational information exchanges in emergency settings.

Original languageEnglish
Pages (from-to)632-650
Number of pages19
JournalDecision Sciences
Issue number6
StatePublished - 2022

Bibliographical note

Publisher Copyright:
© 2022 The Authors. Decision Sciences published by Wiley Periodicals LLC on behalf of Decision Sciences Institute.


  • ED crowdedness
  • ED revisits
  • cognitive decision-making theory
  • diagnosis complexity
  • emergency settings
  • extraneous information
  • health information exchange (HIE)
  • hospital emergency department (ED)

ASJC Scopus subject areas

  • General Business, Management and Accounting
  • Strategy and Management
  • Information Systems and Management
  • Management of Technology and Innovation


Dive into the research topics of 'Too much information? The use of extraneous information to support decision-making in emergency settings'. Together they form a unique fingerprint.

Cite this