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Parametric survival analysis models survival data by assuming a specific probability distribution for the time until an event occurs. The Weibull and exponential distributions are two of the most commonly used methods in this context, due to their versatility and relatively straightforward application.
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The accurate values of population parameters such as population proportion, population mean, and population standard deviation (or variance) are usually unknown. These are fixed values that can only be estimated from the data collected from the samples. The estimates of each of these parameters are sample proportion, the sample mean, and sample standard deviation (or variance). To obtain the values of these sample statistics, data are required that have particular distribution and central...
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Pharmacokinetic models are mathematical constructs that represent and predict the time course of drug concentrations in the body, providing meaningful pharmacokinetic parameters. These models are categorized into compartment, physiological, and distributed parameter models.
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Statistical inference techniques, paramount in hypothesis testing, differentiate into two broad categories: parametric and nonparametric statistics.
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This lesson introduces two critical methods in pharmacokinetics, the Wagner-Nelson and Loo-Riegelman methods, used for estimating the absorption rate constant (ka) for drugs administered via non-intravenous routes. The Wagner-Nelson method relates ka to the plasma concentration derived from the slope of a semilog percent unabsorbed time plot. However, it is limited to drugs with one-compartment kinetics and can be impacted by factors like gastrointestinal motility or enzymatic degradation.
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Correction: Comparison of Two New Robust Parameter Estimation Methods for the Power Function Distribution.

Muhammad Shakeel, Muhammad Ahsan Ul Haq, Ijaz Hussain

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    Summary
    This summary is machine-generated.

    This study corrects a previous article DOI. The corrected DOI is 10.1371/journal.pone.0160692.

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    Area of Science:

    • Scientific publishing
    • Bibliometrics
    • Scholarly communication

    Context:

    • Correction of a previously published article
    • Ensuring accurate citation and referencing
    • Maintaining the integrity of the scientific record

    Purpose:

    • To provide the correct Digital Object Identifier (DOI) for a specific publication
    • To rectify an error in the article's metadata
    • To facilitate proper access and citation of the research

    Summary:

    • The article DOI previously listed was incorrect.
    • The correct DOI for the article is now provided.
    • This correction ensures the article can be accurately identified and accessed.

    Impact:

    • Improved discoverability of the research article
    • Accurate tracking of citations and impact
    • Enhanced reliability of scientific literature databases