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Calculation of the "intangible value" |
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| Dimensions influencing the "intangible value" |
Comparison between effects of two treatment options |
Results based on scientific result or consensus |
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| Absolute Risk Reduction [ARR] |
ARR>40%:10 pts; 39-25%: 9.9-9.0 pts; 24-15%: 8.9-8.0 pts, 14-10%: 7.9-7.0 pts; 9-5%: 6.9-6.0 pts; ARR<5%: 5 pts |
Absolute risk reduction (ARR) = 14% 7.6 points |
| Validity [V] |
Validity (multiplier for not impaired validity = 1.00, for seriously impaired validity = 0.10) |
Subjectively determined validity factor: 0.90 |
| Type of expected effectiveness [TEE] |
Type of expected effectiveness (TEE) (multiplier for prevention of: death = 10.0; life-threatening event = 9.9-9.0; considerable disability = 8.9-7.0; dis-ability = 6.9-4.0; disturbance in well-being = 3.9-1.0 |
Subjectively determined type of exp. effectiveness (TEE) = 9.2 |
| Intangible value (product of ARR score) × (validity factor) × (TEE) |
Intangible value = 7.6 points × 0.90 × 9.2 = 62.9 points |
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The difference in effects (absolute risk reduction) is expressed in score points. These points are multiplied by a validity factor and factor describing the type of expected effectiveness. The given example assumes an ARR = 14%, high validity (0.90) und important type of expected effectiveness (9.2). The calculated intangible value is 62.9 points. | ||
Porzsolt et al. BMC Health Services Research 2007 7:1 doi:10.1186/1472-6963-7-1 |
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