Effects of Computerized Clinical Decision Support Systems CDDS

1
Effects of Computerized Clinical Decision Support
Systems (CDDS)

• Garg, et al
• IE 8541 Decision Support Systems

2
Where do the various CDSSs fall on the Continuum
of Human Control and Automation?
Agent assisted by human
Design environment
Autonomous system
Intelligent assistant
Pencil and paper
Critic
Adapted from Fischer et al. Critics, and
Emerging Approach to knowledge-based ,
International Journal of Man-Machine Studies, 35
(5) 695-721, 1991.
3
CDSS Success Rate

• How much do you think that CDSS success may be
  related to design process? E.g. did the
  developers use a user-centered design process?

4
Types of CDSSs examined

• Diagnosis
• Prevention
• Disease Management
• Drug dosing and perscribing

5
What were the characteristics of the users, task
and situation?

• Frequency of task performance
• Mandatory vs. discretionary use
• Life-criticality of the task
• Knowledge level of users familiarity with system
• Familiarity with task domain

6
What System Characteristics are important in each
type of CDSS?

• What balance of factors are important in a given
  system?
• Ease of learning
• Ease of use, reductions in users time spent,
• Performance in terms of decision and patient
  health outcome,
• Error rate/accuracy
• Functionality, flexibility in range of tasks to
  which system can be applied

7
Power Pig

• Display to help people conserve power in
  computers
• Problem computers left on on weekends and
  evenings consume a lot of power (5)
• Why beleifs, misinformation and lack of
  information
• People dont realize what an impact their
  computer has
• Believe its is bad for computer to turn it off

8
Solution

• Use emotional images
• Competition
• NPR recently reported on an inter-university
  competion to reduce energy consumption, one focus
  was unused computers energy theifs

9
Early in-class Usability Test

• Computer-mock up prototype.
• Please ignore context of text.
• Please record your reaction to each screen. How
  does it make you feel?
• Please state what features you are reacting to
  (if you know.)
• Any other comments you may have
• Concrete suggestions for improvement.