Sökning: "missing dependent variable"

Hittade 3 avhandlingar innehållade orden missing dependent variable.

  1. 1. Methodology for Handling Missing Data in Nonlinear Mixed Effects Modelling

    Författare :Åsa M. Johansson; Mats O. Karlsson; Andrew C. Hooker; Leon Aarons; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmacometrics; population models; censored observations; missing covariates; missing dependent variable; missing data mechanism; missing completely at random MCAR ; missing at random MAR ; missing not at random MNAR ; estimation algorithms; Pharmaceutical Science; Farmaceutisk vetenskap;

    Sammanfattning : To obtain a better understanding of the pharmacokinetic and/or pharmacodynamic characteristics of an investigated treatment, clinical data is often analysed with nonlinear mixed effects modelling. The developed models can be used to design future clinical trials or to guide individualised drug treatment. LÄS MER

  3. 2. Factors shaping demand for prostethic dentistry treatment with special focus on implant dentistry

    Författare :Birger Narby; Malmö högskola; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Sammanfattning : Aim: The main aim of this thesis was to investigate how attitudesinfluence the latent and manifest need, desire, demand, and utilizationfor dental implant treatment, considering the gatekeeping processbetween need and demand, and between demand and utilization ofdental treatment.Material and Methods: A conceptual analysis of the need anddemand concept from the literature was a first step in the study. LÄS MER

  4. 3. Regional and local surface ozone variations in relation to meteorological conditions in Sweden

    Författare :Lin Tang; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; LWTs; surface ozone; high-ozone events; long-range transport; TAPM; MM5; NOx-O3; Sweden;

    Sammanfattning : Air quality is strongly dependent on meteorological conditions. Atmospheric circulation encapsulates general information about local meteorological variables to some extent, and can serve as an explanatory variable for air quality at a regional or local scale. LÄS MER