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<title>Dose-Response Data Evaluation • drfit</title>
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<meta property="og:description" content="A somewhat outdated package of basic and easy-to-use functions for
fitting dose-response curves to continuous dose-response data, calculating some
toxicological parameters and plotting the results. Please consider using
the more powerful and actively developed drc package. Functions that are
fitted are the cumulative density function of the log-normal distribution
(probit fit), of the logistic distribution (logit fit), of the Weibull
distribution (weibull fit) and a linear-logistic model (linlogit fit),
derived from the latter, which is used to describe data showing stimulation at
low doses (hormesis). In addition, functions checking, plotting and retrieving
dose-response data retrieved from a database accessed via odbc are included.
As an alternative to the original fitting methods, the algorithms from the drc
package can be used.">
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<div class="page-header"><h1 id="drfit">drfit<a class="anchor" aria-label="anchor" href="#drfit"></a>
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<p><a href="https://cran.r-project.org/package=drfit" class="external-link"><img src="https://www.r-pkg.org/badges/version/drfit"></a></p>
<p>A somewhat outdated package of basic and easy-to-use functions for fitting dose-response curves to continuous dose-response data, calculating some toxicological parameters and plotting the results. Please consider using the more powerful and actively developed ‘drc’ package.</p>
<p>Functions that are fitted are the cumulative density function of the log-normal distribution (‘probit’ fit), of the logistic distribution (‘logit’ fit), of the Weibull distribution (‘weibull’ fit) and a linear-logistic model (‘linlogit’ fit), derived from the latter, which is used to describe data showing stimulation at low doses (hormesis). In addition, functions checking, plotting and retrieving dose-response data retrieved from a database accessed via ‘odbc’ are included. As an alternative to the original fitting methods, the algorithms from the ‘drc’ package can be used.</p>
<p>More details can be found in the <a href="https://pkgdown.jrwb.de/drfit/reference/index.html" class="external-link">function reference</a>.</p>
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