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Table 2 Input Parameters for Asthma Medication Model

From: A simulation model approach to analysis of the business case for eliminating health care disparities

  Base Model Parameter Range Used in Sensitivity Analysis Source(s)
State Transition Probabilities    
Probability of Asthma Medication Use 80% 70% (90%) [37, 95, 96, 99]
Probability of Exacerbation not requiring ER visit or Admission With Medication = 0.27
W/O Medication = 0.53
Same as 80% [32, 95, 98]
Probability of Exacerbation Requiring ER Visit, not Admission With Medication = 0.0382
W/O Medication = 0.0756
Same as 80% [95, 98, 102104]
Probability of Exacerbation Requiring Admission With Medication = 0.0035
W/O Medication = 0.0069
Same as 80% [49, 101]
Probability of Medication use Following Exacerbation With Medication
- no ER visit or Admission = 0.96
- ER visit, no Admission = 0.99
- Admission = 0.99
With Medication
- no ER visit or Admission = 0.97 (0.99)
- ER visit, no Admission = 0.99 (0.99)
- Admission = 0.99 (0.99)
Authors' values, constrained by requirement that overall medication use be constant over entire simulation
  W/O Medication
- no ER visit or Admission = 0.25
- ER visit, no Admission = 0.30
- Admission = 0.30
W/O Medication
- no ER visit or Admission = 0.15 (0.4)
- ER visit, no Admission = 0.25 (0.45)
- Admission = 0.25 (0.45)
 
Probability of Medication Use Following Month of No Exacerbation With Medication = 0.96
W/O Medication = 0.01
With Medication = 0.95 (0.965)
W/O Medication = 0.01
Authors' values, constrained by requirement that overall medication use be constant over entire simulation
Probability of Death from Other Causes 0.0001 Same as 80%  
State Values    
Utility of Month without Exacerbation With Medication = 0.0748
W/O Medication = 0.0756
  [49]
Utility of Exacerbation not requiring ER visit or Admission With Medication = 0.0706
W/O Medication = 0.0712
  [49]
Utility of Exacerbation requiring ER visit, no Admission With Medication = 0.0698
W/O Medication = 0.0704
  [49]
Utility of Exacerbation requiring Admission With Medication = 0.0649
W/O Medication = 0.0654
  [49]
Days Missed per month from Work or School from Exacerbation not requiring ER visit or Admission 3 days   [95, 98]
Days Missed from Work or School from Exacerbation requiring ER visit, no Admission 4 days   [95, 98]
Days Missed from Work or School from Exacerbation requiring Admission 7 days   [33, 98]
Cost of Doctor Office Visit for Exacerbation $155.44   [105], authors' calculation
Cost of ER Visit $1,080.00   [105], authors' calculation
Cost of Admission $13,512.00   [105], authors' calculation
Cost of Monthly Asthma Medications $112.00   [50]
Hourly Wage for Time Missed from Work $21.31   Department of Labor, May 2007 [46]