Sökning: "joakim wallmark"
Hittade 2 uppsatser innehållade orden joakim wallmark.
1. Treatment-mediator interaction when estimating causal effects
Magister-uppsats, Umeå universitet/StatistikSammanfattning : In a variety of disciplines, causal mediation analysis is routinely conducted by researchers to examine the roles of variables which lie in the causal paths between the treatment and outcome variables. These effects are commonly estimated using a parametric model approach, where one fits regression models for the mediator and outcome variables. LÄS MER
2. Selection bias when estimating average treatment effects in the M and butterfly structures
Kandidat-uppsats, Umeå universitet/StatistikSammanfattning : Due to a phenomenon known as selection bias, the estimator of the average treatmen teffect (ATE) of a treatment variable on some outcome may be biased. Selection bias, caused by exclusion of possible units from the studied data, is a major obstacle to valid statistical and causal inferences. LÄS MER
