Table 1
Years of exposure weighted by probability and intensity equivalent to 1 year of cumulative exposure*
Probability
Intensity
Duration
Low
Medium
High
Assigned weights
Years of exposure
10–50%
Low
0.3
3.5
50–90%
Medium
0.5
0.7
2.0
1.5
>90%
High
0.7
1.0
1.0
1.5
1.0
1.0
*Assigned weight × years of exposure = cumulative exposure.