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Table 1 Clinical and cost inputs

From: Cost-utility analysis of bariatric surgery compared with conventional medical management in Germany: a decision analytic modeling

Parameter

Value

Range

Distribution for probabilistic sensitivity analysis

Source

Patient baseline characteristic

 Age, years

40.4

25–65

Normal (SE = 4.04)

Stroh 2009 [23]

 Gender, males (%)

26.3

-

Beta (α = 1315; λ = 3685)

Stroh 2013 [26]

 Systolic blood pressure, mmHg

140.1

125–200

Gamma (α = 55.53; λ = 2.52)

Sjöström [20]

 Body mass index, kg/m2

48.8

30–60

Normal (SE = 6.5)

Stroh 2013 [26]

 Diabetes mellitus, (%)

20.6

-

Beta (α = 1030; λ = 3970)

Stroh 2013 [26]

 Smoking, (%)

21.9

-

Beta (α = 1095; λ = 3905)

OECD factbook [52]

Cost inputs

 Cost of AGB

5621

4497–6745

-

G-DRG tariff K04B [40]

 Cost of GBP and SG

8104

6483–9725

-

G-DRG tariff K04A [40]

 Annual cost of T2D

3867

1934–7734

Gamma (α = 100; λ = 38.67)

Drabik 2012 [41]

 Annual cost of acute stroke

4054

2027–8108

Gamma (α = 100; λ = 40.54)

Dodel 2004 (ratio of IS and HS is informed by Wolf 1992) [42] [43]

 Annual cost of post-stroke 1 year

5493

2747–10,986

Gamma (α = 100; λ = 54.93)

Rossnagel 2005 [44]

 Annual cost of post-stroke 2 year

6268

3134–12,536

Gamma (α = 100; λ = 62.68)

Kolominsky-Rabas 2006 [45]

 Cost of transient ischemic attack

3327

2662–4159

Gamma (α = 100; λ = 33.27)

Dodel 2004 [42]

 Cost of acute myocardial infarction

7644

3822–15,288

Gamma (α = 100; λ = 76.44)

Reinhold 2011 [46]

 Annual cost of post-MI state

7056

3528–14,112

Gamma (α = 100; λ = 70.56)

Reinhold 2011 [46]

 Annual cost of heart failure

5393

2697–10,786

Gamma (α = 0.34; λ = 15,982.32)

Peters-Klimm 2012 [47]

 Annual cost of peripheral artery disease

2897

1449–5794

Gamma (α = 100; λ = 28.97)

Bruggenjurgen 2012 [48]

 Annual cost of angina pectoris

3899

1950–7798

Gamma (α = 100; λ = 38.99)

Krankenhausdiagnosestatistik, 1997 [49]

Statistisches Bundesamt Deutschland, 2005 [50]

  1. T2D type 2 diabetes, AGB adjustable gastric banding, GBP gastric bypass, MI myocardial infarction, CMM conventional medical management, SG sleeve gastrectomy, IS ischemic stroke, HS hemorrhagic stroke, SE standard error