Sampling Strategy Design II - Design of Commissioning and Termination/Reduction Strategies

Location – (Web PDC)

Instructions regarding how to log onto the web PDC and the conference call phone number, as well as handouts, will emailed to the registered participants at least twenty four hours prior to the web PDC.


Dr. Paul Hewett Ph.D.

Course Description

This 2.5 hour webinar PDC covers an introduction to the design of performance-based exposure assessment strategies, as well as an introduction to sample size estimation. The focus will be on designing strategies that will reliably determine if an exposure profile for a Similar Exposure Group is acceptable or unacceptable, relative to a full-shift, TWA occupational exposure limit. (See the list of Prerequisites.)

The webinar will last 2.5 hours, with an additional 30 minutes for followup questions and clarifications. Each participant will receive an email confirming participation in the PDC.

Learning Objectives

  • Introduction to designing a termination/reduction and a commissioning sampling strategy.
  • Introduction to designing an overall corporate baseline and surveillance strategy based on the AIHA exposure control model.
  • Introduction to sample size estimation for group comparison tests and analysis-of-variance tests.
  • Principles and steps for designing a performance-based strategy.
  • Experience using freeware software for generating performance-curves.
  • Experience designing a baseline and a surveillance sampling strategy.


  • Participation in the webinar PDC “Sampling Strategy Design I”.
  • Familiarity with the AIHA Exposure Assessment and Management Model (see the AIHA monograph “A Strategy for Assessing and Managing Occupational Exposures”, 3rd Edition (2006)
  • Working knowledge of the IHDataAnalyst (full or Student Edition).
  • Recommended reading prior to the WebPDC:
    • Hewett, P. (2005): Technical Report 05–03 – Performance-based exposure assessment strategies for TWA exposure limits. Exposure Assessment Solutions, Inc. (available free from

Presentation List

  • Designing a Termination / Reduction Strategy
  • Designing a Commissioning Strategy (for new control equipment)
  • Calculating a Sample Size that Minimizes both False Negatives and False Positives
  • Sample Size Estimation for Group Comparison Tests
  • Sample Size Estimation for Evaluating of Within- and Between-work Variability (ANOVA)
  • More Issues and Controversies in Exposure Assessment
  • Introduction to the Exposure Assessment Strategy Simulator Program (EASS) + Workshop


$250 per participant

Cancellation Policy

A credit for an upcoming web PDC or a refund will be given for any cancellation made at least one business day prior to the day of the class. For example, if the web PDC is presented on a Saturday, the cancellation must be made by 6PM (1800) US Eastern time on the previous Thursday in order to qualify for a credit or refund. All refunds will be minus a $50 fee to recover credit card fees and administrative costs. No refunds or credits will be given if the notice of cancellation is not received within one business day of the web PDC.

Exposure Assessment Solutions, Inc. reserves the right to cancel the PDC at any time, in which case a full refund or credit will be given to each participant.

Read these notes before you sign up:

NOTE: The registration and participation policy for each Web PDC is the same as for a fixed location or on-site PDC. Each particpant must register. Registration is per participant, not per viewing site. Only those registered should view and particpant in this web PDC.

NOTE: The email address submitted at the time of payment will be used for all email communications and for logging onto the web PDC.

NOTE: This web PDC will presented using GoToMeeting. GoToMeeting must be installed on your computer. To install (usually takes less than two minutes), click on the GoToMeeting link above, scroll to the bottom of the page, and click on the link “Download GoToMeeting (for customers)”. If you do not have adminstrative privileges for your computer have your IT person install the GoToMeeting software well in advance of the web PDC.

NOTE: The conference call number will not be toll free. You will be responsible for any long distance phone charges if you do not have an unlimited long distance account. However, you may also connect using your computer speakers and microphone or headset (VoIP).

NOTE: See the “Prerequisites” below for software and freeware that will be helpful when taking this web PDC. To download and install the program(s) you must first be a registered member of