Search for dissertations about: "Covariates"
Showing result 6 - 10 of 128 swedish dissertations containing the word Covariates.
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6. Multiple Time Scales and Longitudinal Measurements in Event History Analysis
Abstract : A general time-to-event data analysis known as event history analysis is considered. The focus is on the analysis of time-to-event data using Cox's regression model when the time to the event may be measured from different origins giving several observable time scales and when longitudinal measurements are involved. READ MORE
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7. Bilingual education cognitive development and school achievement : a study of the bilingual programs for Tibetan children
Abstract : This study examines the effects of two models of school bilingual programs on Tibetan children's cognitive development and school achievement.Based on the findings of empirical studies, Cummins' threshold theory was critically evaluated. READ MORE
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8. Reliability analysis and maintenance scheduling considering operating conditions
Abstract : In reliability analysis failure times are often considered as the only factor that can explain the reliability characteristics of a system. This may be insufficient. Operating conditions and other factors (e.g. READ MORE
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9. Monotonic and Semiparametric Regression for the Detection of Trends in Environmental Quality Data
Abstract : Natural fluctuations in the state of the environment can long conceal or distort important trends in the human impact on our ecosystems. Accordingly, there is increasing interest in statistical normalisation techniques that can clarify the anthropogenic effects by removing meteorologically driven fluctuations and other natural variation in time series of environmental quality data. READ MORE
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10. Covariate selection and propensity score specification in causal inference
Abstract : This thesis makes contributions to the statistical research field of causal inference in observational studies. The results obtained are directly applicable in many scientific fields where effects of treatments are investigated and yet controlled experiments are difficult or impossible to implement. READ MORE