Welcome to the second and final part of our in-depth blog series: How Many Samples to Collect? Sample Till You’re Sure.
Gus Manning, Chief Technical Officer & company founder, has made it his life’s work to bring accurate, cost-effective, and easy-to-use samplers to the workplace and make work environments safer for workers. The OSHA enforcement strategy – assuming workplace exposures could be well characterized by a small number of samples – has been found deficient in a number of classic studies, cited in this series.
Gus’s work for this series is grounded in the AIHA’s Exposure Assessment Committee’s finding that IH practitioners may underestimate exposures when reviewing workplace exposures, because workplace exposures tend to have high variation that follows a skewed (lognormal) pattern, rather than a normal (Gaussian) pattern.
Part 1 of this series showed that variation in workplace exposures is greater than many had thought, leading the IH community to generally underestimate exposures. In Part 2, Gus goes into more detail about the statistical principles behind this variation and the effect on sampling results.
Click the link below to view Part 2.
How Many Samples to Collect? Sample Till You’re Sure, Part 2 by Gus Manning, PhD, CIH.
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