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Table 1 Cost parameters (in 2012 Canadian dollar per patient)

From: Cost effectiveness and value of information analyses of islet cell transplantation in the management of ‘unstable’ type 1 diabetes mellitus

Source of costs

Mean

SD

RSD

Distribution

Hyperparameters

Sourcea

Pre-transplant visit

569

    

University of Alberta Hospital

Transplantation (including initial medication, based on 4 day stay: 1 pre-op and 3 post-op)

91,414

 

15.0 %

Log-Normal

μ = 11.412029

University of Alberta Hospital

σ = 0.149166

Total costs per transplantation (including all costs in the 23 days after a transplantation)

94,765

  

(via input)

  

Medication and follow-up (from day 4 post-op onward)

Tacrolimus (per month)

450

 

7.5 %

Log-Normal

μ = 6.106443

University of Alberta Hospital

σ = 0.074895

Mycophenolate mofetil (MMF; per month)

500

 

7.5 %

Log-Normal

μ = 6.211803

University of Alberta Hospital

σ = 0.074895

Alemtuzumab (once per transplant)b

0

    

University of Alberta Hospital

Basiliximab (once at 2nd transplant for about half of patients instead of Alemtuzumab)

3000

    

University of Alberta Hospital

Valganciclovir (for 14 weeks)

5000

375

7.5 %

Log-Normal

μ = 8.514389

University of Alberta Hospital

σ = 0.074895

Anakinra (total for remaining 3 days after discharge)

574

43

7.5 %

Log-Normal

μ = 6.349825

University of Alberta Hospital

σ = 0.074895

Immunosuppression (per cycle, drugs: see above)

713

53

7.5 %

Log-Normal

μ = 6.56667

Calculated via data from University of Alberta Hospital

σ = 0.074895

Generic immunosuppression (per cycle)

238

18

7.5 %

Log-Normal

μ =5.46808

Calculated as 1/3 of cost above (price reduction for generic version based on market prices)

σ = 0.074895

Costs for insulin therapy in graft survival state (per cycle)

64

  

(via input)

 

Calculated via data from [33] and based on [10] as 40 % of costs with intensive insulin therapy

Post-transplant check-up visit (at week 1, 2, at 6 months and 1 year and then once a year)

556

42

7.5 %

Log-Normal

μ = 6.31800

University of Alberta Hospital

σ = 0.074895

Total per cycle (per year) costs for immunosuppression, follow-up and insulin (if applicable)

Full graft function for the first 6 months

1886 (30,175)

  

(via inputs)

 

Calculated via data from University of Alberta Hospital

Full graft function after the first 6 months

747 (11,956)

  

(via inputs)

 

Calculated via data from University of Alberta Hospital

Partial graft function for the first 6 months

1950 (31,196)

  

(via inputs)

 

Calculated via University of Alberta Hospital data and [33]

Partial graft function after the first 6 months

811 (12,977)

  

(via inputs)

 

Calculated via University of Alberta Hospital data and [33]

Intensive insulin therapy

Average healthcare costs of treating people with newly diagnosed diabetes (first 10 years) per cycle (per year)

Without complications for type 1 and 2 diabetes

159 (2552)

12

7.5 %

Log-Normal

μ = 5.06920

Corrected data from [33]

σ = 0.074895

With complications for type 1 and 2 diabetes

602 (9632)

120

20.0 %

Gamma

α = 25.00000

Calculated from corrected data in [33]

β = 24.0796

Other costs (per occurrence)

Average extra costs of initial immunosuppressive or other complications

600

180

30.0 %

Gamma

α = 11.1111

Assumption based on [2] and expert opinion

β = 54.0000

Average extra costs of major immunosuppressive complications

6500

1300

20.0 %

Gamma

α = 25.0000

Assumption based on [2] and expert opinion

β = 260.0000

  1. Bold values were directly used as model inputs and for calculating mean, standard deviation (SD) and relative standard deviation (RSD; i.e., SD as percentage of the mean). Other values are rounded and were incorporated into bold values. Superscripts: a Source relates to mean values. SD values were the authors’ estimations due to lack of data. b At the time of our study it was provided at no charge through a compassionate release program