Estimation of reduced life expectancy from serious occupational injuries in Taiwan.

This study assesses the loss of life expectancy and potential working life in Taiwan, between 1986 and 2000, from various types of occupational accidents resulting in mortality or permanent disability. The databases on occupational mortality and permanent disability were obtained from the Bureau of Labor Insurance, with this information then being linked to national death registry data to construct the survival function. A Monte Carlo simulation method was subsequently used to extrapolate the survival rate for up to 600 months, to derive the life expectancy for different types of occupational accidents leading to permanent disability (n=81,249). Based upon the life table for each calendar year, the life expectancy lost by age-gender cohort was also estimated for cases of mortality (n=20,001). In those cases resulting in permanent occupational disability, variations in the expected years of life lost (EYLL) were demonstrated by different occupational injuries, ranging from 7.4 to 13.6 years per case. The overall EYLL through permanent occupational disability is found to be almost identical to that of occupational mortality, with a ratio of 1.04:1. We conclude that permanent disability resulting from occupational injuries has a significant impact on society as a whole.

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