Table 1 Model parameters, not specified by age group
From: Cost-effectiveness of mandatory bicycle helmet use to prevent traumatic brain injuries and death
Model parameters | Value (registered cases TBI on ED) | Source |
|---|---|---|
Incidence of TBI (number of cases) | 8016 | Dutch Injury Surveillance System |
TBI related mortality (number of cases) | 124 | CBS cause of death statistics |
Years Lived with Disability after TBI (mean value) | 6649 | Dutch Burden of Injury Model |
Years of life lost following TBI (mean value) | 2089 | Dutch Burden of Injury Model |
Disability-adjusted life years (sum of YLL and YLD) | 8738 | Dutch Burden of Injury Model |
Number of cyclists | 13,468,742 | Computed with data from CBS Statline |
Helmet efficacy (RR: TBI with helmet vs. without helmet) | 0.583 | Computed with data from existing literature |
Mean current helmet use rate | 2% | Dutch Injury Surveillance System |
Mean helmet use rate following legislation | 88% | Computed with data from existing literature |
Risk of TBI when helmeted | 0.000347 | Model outcome |
Risk of TBI when unhelmeted | 0.000595 | Model outcome |
Risk of death for TBI victim | 0.015493 | Model outcome |
Mean medical costs per person with TBI | € 4335 | Model outcome |
Incidence of work absenteeism* after TBI (number of cases) | 2820 | Model outcome |
Mean work absenteeism costs* per person | € 11,252 | Model outcome |
Mean working-days absent | 36 | Model outcome |
Mean productivity loss due to mortality* | € 12,054 | Model outcome |
Friction period | 101 days | Guideline [26] |
Mean number of working hours per week | 31 h | CBS Statline |
Net labor participation | 75.80% | CBS Statline |
Mean wage per hour | € 35.55 | Manual for Costing Research, corrected for inflation |
Mean helmet costs per year | € 10 | Estimate (see text) |