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Statistical tools for determining appropriate selection of regression models for analysis of environmental fate
Jeremy Aldworth1, Scott H Jackson
1RTI International, 3040 Cornwallis Road, Research Triangle Park, NC 27709, USA.
Background:
In the NAFTA regulatory community, a currently consistent methodology used to estimate dissipation times for environmental fate data is not applied.
Results:
This work demonstrates through a case study that the inappropriate use of pseudo-first-order regression models can result in inaccurate estimates of soil degradation rates, and it proposes some statistical tools that can be used to identify an appropriate statistical model to fit a particular environmental fate dataset. Diagnostic procedures have been proposed to identify the appropriate scale, and statistical testing procedures have been proposed to select the appropriate model within that scale.
Conclusion:
Results from this work demonstrate that, unless the proposed diagnostic and statistical procedures are used, inaccurate estimates of dissipation times may result.
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