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  2. Dose–response relationship - Wikipedia

    en.wikipedia.org/wiki/Doseresponse_relationship

    The doseresponse relationship, or exposure–response relationship, describes the magnitude of the response of an organism, as a function of exposure (or doses) to a stimulus or stressor (usually a chemical) after a certain exposure time. [1] Doseresponse relationships can be described by doseresponse curves. This is explained further ...

  3. Bradford Hill criteria - Wikipedia

    en.wikipedia.org/wiki/Bradford_Hill_criteria

    Temporality: The effect has to occur after the cause (and if there is an expected delay between the cause and expected effect, then the effect must occur after that delay). Biological gradient (doseresponse relationship): Greater exposure should generally lead to greater incidence of the effect. However, in some cases, the mere presence of ...

  4. PK/PD model - Wikipedia

    en.wikipedia.org/wiki/PK/PD_model

    PK/PD relationships can be described by simple equations such as linear model, Emax model or sigmoid Emax model. [5] However, if a delay is observed between the drug administration and the drug effect, a temporal dissociation needs to be taken into account and more complex models exist: [6] [7] Direct vs Indirect link PK/PD models

  5. Pharmacodynamics - Wikipedia

    en.wikipedia.org/wiki/Pharmacodynamics

    Pharmacodynamics places particular emphasis on doseresponse relationships, that is, the relationships between drug concentration and effect. [1] One dominant example is drug-receptor interactions as modeled by +

  6. Schild equation - Wikipedia

    en.wikipedia.org/wiki/Schild_equation

    A reversible competitive antagonist should cause a rightward shift in the dose response curve, such that the new curve is parallel to the old one and the maximum is unchanged. This is because reversible competitive antagonists are surmountable antagonists. The magnitude of the rightward shift can be quantified with the dose ratio, r.

  7. Linear no-threshold model - Wikipedia

    en.wikipedia.org/wiki/Linear_no-threshold_model

    The model assumes a linear relationship between dose and health effects, even for very low doses where biological effects are more difficult to observe. The LNT model implies that all exposure to ionizing radiation is harmful, regardless of how low the dose is, and that the effect is cumulative over lifetime.

  8. Causal notation - Wikipedia

    en.wikipedia.org/wiki/Causal_notation

    A causal diagram consists of a set of nodes which may or may not be interlinked by arrows. Arrows between nodes denote causal relationships with the arrow pointing from the cause to the effect. There exist several forms of causal diagrams including Ishikawa diagrams, directed acyclic graphs, causal loop diagrams, [10] and why-because graphs (WBGs

  9. Pharmacokinetics - Wikipedia

    en.wikipedia.org/wiki/Pharmacokinetics

    Pharmacokinetics is based on mathematical modeling that places great emphasis on the relationship between drug plasma concentration and the time elapsed since the drug's administration. Pharmacokinetics is the study of how an organism affects the drug, whereas pharmacodynamics (PD) is the study of how the drug affects the organism.

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