The role of burning time, standardized by the number of stoves used in personal exposure to PM2.5 is consistent with the expectation of increased exposure with increased burning time.
If all 47 FFES subjects with complete data had an identical exposure distribution, any single applicator sampled 47 different times would have an expectation of presenting exposure data with a statistically similar mean and variance as the FFES 47 sampled only once each.
Prophylaxis was the mode of use of oseltamivir when there was expectation of possible exposure to influenza in the near future.
This postulation is analogous to the Berkson error model in the sense that the conditional expectation of the true exposure given the observed exposure is exactly the same as the observed exposure.
Because of expanded expectations for use of exposure assessments, along with the emergence of new technologies for exposure measurements (e.g., high throughput genomic tools, personal monitors, source-to-dose modeling systems), over the past few years, it became clear that the status of the field needed to be reexamined.
Representative chemical analytes were chosen based on public health relevance and expectation of relatively widespread exposure.
Then, the conditional expectation of the true exposure given the observed group mean in this case is E [ X gi | W ¯ g ] = W ¯ g + (m − 1 ) (W ¯ g − μ g ), where m = cov (X gi, W ¯ g ) / var (W ¯ g ).
Warner believes the difference lies in the level of exposure and expectation.
"The plaintiffs entered into their transactions with the defendants with full knowledge of the facts and no expectation of compensation other than exposure.
In consideration of her frail condition and our expectation of difficult mitral valve exposure due to her very bent back, aortic valve replacement (Mitroflow 21 mm) without mitral surgery was performed.
