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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
Merveille Koissi Savi1, Essomanda Tchandao Mangamana1, Jean Marcel Deguenon2, Castro Gbèmemali Hounmenou1 and Romain Glèlè Kakaï1
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DOI:10.17265/2161-6256/2017.01.004
Affiliation(s)
1. Laboratoire de Biomathématiques et d’Estimations Forestières, Faculty of Agronomic Sciences, University of Abomey-Calavi, 04 BP 1525, Cotonou, Benin
2. Department of Entomology and Plant Pathology, North Carolina State University, Campus Box 7616, Raleigh, USA
ABSTRACT
Several thousands of chemical substances are registered every year for
different purposes, and sometimes many
of them are claimed to play the same role. To establish and compare their
toxicities, the determination of the lethal concentrations is usually necessary
and should account for natural mortality. However, many of the statistical
software packages used for that purpose do not readily integrate control
mortality or adjust the best link function to the data during the process. This
manuscript proposes an “lc” function in the R open source that aims at the
effective determination of lethal concentrations. Furthermore, it performs the
procedure with the appropriate link function. The “lc” application on the
example provided revealed that the complementary log link function is adequate.
KEYWORDS
Toxicity, lethal concentration, Abbott correction, binomial family links, generalized linear models, pesticides.
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