1. Lab Module 9 User-defined Statistics
Copyright © Jeffrey S. Smith and Simio LLC | All Rights Reserved

2. Objectives and Outline
Lab Objectives
Continue learning basic Simio modeling
Learn how to use Simio user-defined statistics (Output, Tally, State)
Learn how to use add-on processes and resource lists to implement a customized secondary-resource requirement
Lab Outline
Video 1 – Emergency Department Model
Video 2 – Adding User-defined Statistics
Video 3 - Adding User-defined Statistics (cont.)
Video 4 – Assignments
Copyright © Jeffrey S. Smith and Simio LLC | All Rights Reserved

3. Video 1 – Emergency Department Model
Based on Model 9.1
Focus on user-defined statistics
Tally Statistics
State Statistics
Output Statistics
Secondary Resources
Copyright © Jeffrey S. Smith and Simio LLC | All Rights Reserved

4. Patient Flow and Doctor/Nurse Requirements
Registration
Exam
Treatment
Trauma
Routine
Moderate
Severe
Room
Exam/Treatment Resource(s) Required
Exam Room
Doctor or Nurse, Doctor preferred
Treatment Room
Doctor and Nurse
Trauma Room
Doctor and (Nurse or Doctor, nurse preferred)
Interested in:
Resource requirements (cost)
Rooms (Exam, Treatment, Trauma)
Doctors
Nurses
Patient waiting time (time before seeing the doctor/nurse)
Copyright © Jeffrey S. Smith and Simio LLC | All Rights Reserved

5. Video 2 – Adding User-defined Statistics
Registration
Exam
Treatment
Trauma
Routine
Moderate
Severe
Copyright © Jeffrey S. Smith and Simio LLC | All Rights Reserved

6. Video 3 – Adding User-defined Statistics (cont.)
Registration
Exam
Treatment
Trauma
Routine
Moderate
Severe
Cost = $2000 * Exam Capacity
+ $2500 * Treatment Capacity
+ $4000 * Trauma Capacity
+ $4000 * Nurse Capacity
+ $12000 * Doctor Capacity
+ $250 * Total Patient Waiting Hours
Copyright © Jeffrey S. Smith and Simio LLC | All Rights Reserved

7. Video 4 – Assignments
Add a new user-defined statistic to track the number of non-urgent patients in the system.
Add a new user-defined statistic to measure patient throughput. Use this statistic to determine whether or not the system is stable (i.e., the system has sufficient resources to handle the patient load).
Add a new user-defined statistic for patient satisfaction. Define patient satisfaction as the proportion of Routine patients who wait less than or equal to 0.5 hours.
Create an experiment and try to find the best resource capacities (in terms of our cost function) subject to the constraint that patient satisfaction is at least 80% (and demonstrate that the system is stable using the throughput statistic).
Copyright © Jeffrey S. Smith and Simio LLC | All Rights Reserved