Is TWA exposure the appropriate metric?
The epidemiological studies carried out so far have tended to use TWA exposure as the most robust metric because of the absence of a plausible biological mechanism for adverse health effect at environmental levels. However other metrics, such as peak values, time above thresholds, number of excursions and presence of transients, may be investigated in future studies.
Related Questions
- What is the appropriate exposure frequency for a typical commercial/industrial worker -- 250 days, 219 days, or some other derived value for intermittent exposure?
- In a continuous noise environment, is the TWA exposure level always the right number to use?
- When does Longshore stop and Admiralty Exposure start?
